Патент USA US2399628код для вставки
Ma? 7„41946„ ' M. CUNNINGHAM MATTRESS Filéd April 19, 1945 . 2,399,[email protected] 2 Sheets-Sheet l » M. M. CUNNINGHAM MATTRESS Filed April 19, 1943 2 Sheets-Sheet___2 i Patentedl May Ú, 2,399,628; olf-'Fics ,PA " UNITED s'rA'rEs2,399,628I MAESS Ind., assigner to Misha 'Rubi' à Woolen Manufacturing Company, Mishawoha, lind.„ a Marion Morgan Cunning, South t* :s corporation oil «i t t n Application April ld? i943, Serini No. [email protected] ti se or sooo any ci the advantages thereof. lin the accompanying drawings: ' The present invention 'relates to mattresses, and particularly to combined inner spring and nge rubber mattresses.` The invention, in gen eral, aims to provide a highly serviceable e d comfortable sponge rubber -mattrese pad withbya spring assembling unit or a io units Fig. ll is u perspective view of one form of mat trees embodying features oi the present inven tion shown suppo on. a conventional box spr ioundation or beadstead; lädt’. 2 is a partial perspective view. on a larger scale, or’ the mattress seen in Fig. 1, showing the d. ille obiect of the invention is to provide mattress cover or tic opened at one end, as » u ttress oi the chnracter indiceted, inclu 'v a insertion or withdrawaloi the spring unit; ent spongy rubber body supporting eie liti torFig. d is an end elevation, looking at the mat ent or pad,` n spring assembly d e, severine tress oi Figs. l. and 2 .trom the right-hand end or r thereior, which may bey easily dis made up of a number of coil springs. y ’ thereof, with parts in section; neeebied when it is denied to substitute other spring its oi greater or lesser resiliency, or wäen thas pad end ticking is to be washed and/or its Y 1 ii is n transverse cross section, as on th liti' line t-t oi Fig. l. showing the mattress de pressed as when supporting a person and also im’ sho er obiect is to provide a mattress con struction which permits air to rmeate oi its walls for thorough and continuousventilation. d ther object is to provide separate but united iabric compartments ici' the pad and springs, so in eievetion the upper portion of the box sp ‘ tu ioundntion; ` Fig. o "is e, fragmentary vertical section on a larger scale showing the attachment of tape to ' the foam rubber pad for the securing of the tici:u ing thereto; that the pad may be anchored to the springs vet - . Fig. d is a fragmentary vertical section through the pad on the scale of Fig. 5 showing the manner may be easily removed therefrom, along with the fabric. 25 oi' securing it to the fabric envelope or ticking Other objects are to unite the metallic u ivi with soft foam rubber in such a way that th foam rubber cmmot be torn or cut by ordinary. usage; to protect the user under all conditionsA which encloses the springs; and - Fig. "i is an end elevational view, partly in sec tion, sho a modiñed form of mattress wherein e i units of diil'ering supporting power are from contact with the spring unit; to provide a i so employed. in general, the present invention, according to mattress of _pleasing appearance so that it is readily salable; to facilitate sliding the spring an important aspect thereof, comprises an envel oping casing or mattress ticking in an upper por unit in and out oi the fabric compartment; and tion or >compartn'nent of which is secured prefer to provide a mattress which may be sold at n 35 ably in a more or less permanent fashion, a pad reasonablevcost. or body supporting member of sponge rubber. Still another object of the invention is to pro Such pod is preferably of the type molded of an vide, in a mattress having a spongy rubber body aqueous dispersion of latex which has been supporting member, an arrangement utilizing a whipped into a foam in the presence of „a froth plurality of spring units of differing tension, strength or supporting power whereby the mat 40 ing agentl or which has been combined with a separately prepared foam, and generally contains tress, and particularly the upper part thereof, hasample compressibility and resilience accom internal cavities formed in the molding operation. panied >by a high hysteresis value as a whole, ir ' Underneath the >seid pad the ticking is formed, respective of the particular type of covering or 45 substantially throughout its area, with a. sepa rate compartment into which is inserted a set or assembly of coiled springs, preyerably of a 4ticking employed. With these and other objects in view theïin vention resides in the construction, operation and novel combination and arrangement of parts hereinafter fully described, illustrated in the ac type commonly employedin so-calle' inner spring _' mattresses; At one end of the spring compart ~ mentthe ticking walls are divided or slitted to afford an opening for the ready insertion or re companying drawings and particularly pointed moval of the spring unit, and are provided with suitable fastener elements to maintain the open ing closed when the spring unit is within the com out inthe appended claim, it being understood ' that various modifications may be made in the form, proportion and minor details and arrange« t ment of parte. within the scope of the claim, without departing' from' the spirit of the inven partment. 55 According to a further aspect of the invention ' 2 2,399,628 the ticking with contained rubber pad may be provided with two lower compartments for the reception of two individual spring units which, preferably, may have differing characteristics as to stiffness, supporting power, and the like. In this aspectI of the invention the ticking is pref erably provided with an opening or openings for the ready insertion and removal of the springs. The latter feature, however, -is not necessarily an _essential component, since the providing of a mattress comprising a sponge r'ubber pad and a pair of springs of differing characteristics, all en closed within an enveloping ticking, is deemed to constitute a novel and important aspect of the the foam rubber pad that yields with the pad when the latter is compressed but is otherwise practically immovable relative to the pad. To provide an envelope, casing or compart ment for the spring u?it,_heavy cotton duck or other porous fabric walls 23 are attached along their upper margins, as by stitching @24, to the cover sheet I9 and tape 22, Fig. 6, thus securing the pad Iii and its covering to the compartment 10 enclosing the spring unit.- Walls 23 may be in tegral with or sewed along a seam 25 to a bottom fabric wall 25a which completes the envelope or casing, there being four walls 23 which provide two side walls and two end walls. present invention, irrespective. oi’ whether the 15 At one end of the envelope the material of the spring units are readily removable from the tick end wall and the adjoining side walls is slitted ing or are substantially permanently incorporat or divided, as at 26, to make an opening large ed therewithin. . ' " .enough to admit thespring unit I 0 endwise, if v In accordance with a preferred form of the the spring unit is compressed as illustrated in invention, I employ a coil spring unit I0 of con 20 Fig. 2, and suitable fastening elements, such as ventional construction embodying heavy mar snap fasteners 21, may be employed to seal the ginal or frame rods or Wires II, coil springs I2 opening (see Fig. 1) when'the spring unit is in and tie wires I3 connecting the coil springs to side the envelope. It will be appreciated, of each other and to the marginal ~wires II. The course.' that the opening 26, preferably, will be latter are preferably covered with suitable pad 25 so constructed that the fabric forms overlapping ding material IIa for‘the purposes of comfort lips for proper operation-of the fastening ele and the prevention of damage to the ticking or ments, as clearly seen in Figs. l and 2. casing presently to be described. Such a unit is The height or width of walls 23, preferably, is extremely flexible, in' fact it will yield in every such that the spring unit is somewhat compressed direction, and it is excellently adapted for sup 30 . throughout its area when it is within the envelope. porting a foam rubber pad if the pad is prop Thus the walls 23 are maintained under tension erly anchored and adequately protected. against except when the mattress is supporting a load the cutting'or tearing action of the upper ends of as shown in Fig. 4. The reaction from the com coil springs I2. It will be understood that foam pression oi' the spring unit tends to hold the rubber is extremely soft and does not have a 35 heavy wire frames I I in the inside corners formed great deal of strength, but because of its lcom pressibility and low internal friction, and for at the upper and lower margins of the side and end walls, as' seen in Figs. 3 and 6. other reasons known to those skilled in the art, Wh'en it is desired to separate vthe spring unit _ it is highly desirable for use in mattresses. I0 from its envelope, the fastening means 21 are The foam rubber pad I4 (Fig. 3 et seq.) may 40 separated and the opening 26 is spread apart , be from one to two inches in thickness and pref whereupon the envelope or ticking', and contained erably is both wider and longer than the spring rubber pad, may be drawn off the spring unit, as unit, so that when assembled with the spring will be clear from Fig. 2. When inserting a spring unit it overhangs the marginal wires II on all unit, the cotton or other padding II a which cov sides by about one inch. All the edges of the 4.5 ers all of the marginal wires II will facilitate pad are made more flexible by being beveled both sliding the unit, and the fabric sheet I9 on the from the top and from the bottom, as best shown bottom of the pad I4 cooperates in making the in Figs. 5 and 6, said beveling being indicated at introduction of the unit, ev'en though under com I6 and I1 and obviously comprehendlng the over . pression, aA relatively easy operation. Other ' hanging portion of the pad. On the underside, 50 spring units of- different resiliencies or load-ca the pad- I4 has a large _number of preferably cup-Í pacities may be substituted at any time for the shaped recesses or cavities lIii not only to increase unit I0 in a mattress of t'he invention to adapt the compressibility of the pad, but also to insure the mattress to the comfort or whim of the user. adequate and continuous ventilation thereof, as . _Thus the invention is especially valuable for use will be explained. The described pad must be in hospitals, hotels and wherever the public is protected by a cloth casing, to which it should be particularly catered to. When maximum com secured immovably without interference with fort is desired, as in a hotel, the mattress will be flexing of the pad, and toA this end a heavy cot supported probably on box springs 28 of conven ton duck or other porous cloth sheet I8 is tional form (Figs. 1 and 4). Of prime impor stretched over the top of the pad, while a sim 60, tance, however, is the fact that the described ilar or even heavier fabric sheet I8 is stretched removable envelope, and contained pad, may be over the bottom of the pad. both sheets I8. I9 readily removed from the spring unit and washed being stitched together, as indicated at 20, out and sterilized as a unit, without any injurious ef side the thin edge provided by bevelingv I _8, I1. fect, and this feature is obviously of the greatest Cloth tape 2| may be secured‘ over the'seam by importance in hospitals and asylums. . the stitching 20 to make a better appearance. To Another feature of the invention is the extra y anchor the sheets I 8 and I9 to the pad. a rub berized tape 22, cemented or vulcanized to the foam rubber pad along the lower beveled edge I1, may be secured by the stitching 20 to the upper and lower sheets, the lower sheet I 9 being outside of tape 22 as Vshown in Fig. 6. Tape 22 of course .extends all around the pad and affords a very l strong anchorage for the upper and lower cover ' sheets, which thus provide» a compartment .for ordinary provision .for thorough ventilation lof the mattress. The foam rubber itself is essen tially a mass of intercommunicating air cells formed in vulcanized latex, and it permits con tinuous circulation of air; a circulation which is _ not impeded by the porous fabric layers I8 and I9 which enclosevand protect the foam rubber. The Iside walls 23 of the lower compartment where the spring unit is contained are likewise ’ .3 porous, and the spring unit itself is o! very open construction, so that Ventilating convection cur rents may. continuously enter` and leave through the side walls and may also pass up through the fabric _I8 and pad I4, or downwardly through the pad, as Vdetermined 'by the temperature oi the room, etc. The cavities-I6 play an important part in Ventilating . the mattress,- as the cavity walls are collapsed by the weight of a body lying on the mattress, and the extent of collapse oi the walls of each cup-like recess or cavity I5 depends upon the weight or compressive stress imposed foam rubber against the tearing’or cutting -action of the upper ends of the coil springs I2, and as , previously stated, assists in facilitating sliding of »thespring'- unit into its envelope or compartment. ‘A further'function oi'-v ¿sheet I9 is to cooperate with the foam rubber in insulating the coil springs, which, being of metal, will' draw ofi body heat Y rapidly in a cold room. ’ , A Desirably the spring .unit is so made that the coil springs in the center are slightly higher than those at the margins adjacent wires il. This `causes the spring unit- to have a slight crown or convexity which is imparted to the top oi the rubber pad when the mattress is assembled, as . on that part of the pad Il. The body of a person lying on a mattress is constantly shifting or ' changing its position, and with every movement of `every limb, with every turnof the head orl trunk, the walls defining some of the cavities it are deformed and compressed or are relieved of pressure, the result being a continual compression best shown in Fig. 3. Thus the mattress'has a ' better appearance and is more readily sold. In Fig. 7, as previously indicated, there is` shown ¿a Vmodification of the present invention, wherein ` -`two spring units. of didering characteristics are` employed. l of air in the different cavities, followed by relief 20 . ln this form there has been shown, ‘ for purposes of illustration, the same, type oi in of such compression as the air seeps through the ` tegrated envelope or tic, and contained sponge ' porous fabric It covering the openings in said rubber pad, as previously described. rl‘hus there cavities. The sudden compression oi air in any is seen the pad it, with its enveloping cover layers cavity also causes some of the air to be forced through the intercommunicating air cells ol the 25 it and it, the depending walls it, and the bottom the said walls accoun roam rubber pad and thus ventilation of the padl . wall tta, the space wit modatlng a pair ol springs as will presently be itseli, which normally takes place very slowly ‘but described. The end wall, seen partially in eleva continuously, is accelerated by normal use oi" the tion, is preferably provided with a mouth or open lt will be understood that the ventilat ' mattress. ing adapted to he normally maintained closed -ing aircurrents which constantly pass through the by the fasteners tl, in the manner and tor the v mattress oi the invention are entirely unnotice purpose previoy described. able and do not in any way detract from the oom in the presentpinstance the vertical length of _ i-"ort oi the user. On the other hand adequate ventilation oi' the mattress will usually enhance 35 the side and end walls iii is somewhat greater than in the nrst described io ci the invention, the conilort oi the user. especially in hot weather, thus providing an enclosed space below the pad as will he understood without further description. le the cavities or recesses lb are distributed uniformly over the greater part of the area of the underside of the loam rubber pad, as best shown in, rigid there is an area adjacent the marginal wires I i oi the spring unit where the loam rubber pad has no cavities and hence odors adequate padding for the wires Il, which would be very uncomfortable if felt through the pad. “ I; en one sits on the side ofthe bed, the project ing or overlapping portion of the pad will bend or i’old down, again to prevent discomfort from the Wires I I. This downward bending or folding takes place more readily because of the bevellng It and vlll oi the edges of the pad. said beveling making `the pad edges much more ñexible. iii ci substantially greater depth. This enclosed A space'is divided by a horizontal fabric partition ' iii, which may be stitched or otherwise attached along its margins to the walls it, into two super posed compartments iii and lit, each. of which is adapted to accommodate a separate individual>`A coil spring unit, as indicated by the numerals di and it. Thus it is possible --to provide the mattress oi’ Fig. 'i with a; pair oi springs oi’ aider ing characteristics, and this end may be accom plished .by having the compartments ti and il ci substantially equal depth and utilizing, in one compartment, a spring unit of heavier con struction or gauge'than that employed inthe other. , . However, I prefer to so construct the ticking When a person lies down on the mattress, the that the depth or thickness'oi’ the upper com top pad cover I8 will be depressed (Fig. fiiwith concomitant compression of the foam rubber pad, 55 pertinent di is materially greater than that of theY lower compartment 32, to snugly accommo and as pad cover I8 tits smoothly over the top Asurfaceot the pad, central downward depression of pad cover I8 will cause a tension in the pad »cover adjacentboth side'edges and, this vtension will lift the beveled edges of the foam rubber- pad and will tend to pull said edges inwardly. The pad and its covers I8 and I9 areA free to move inwardly relative to the upper 'marginal wires il - because they are not fast to said marginal wires, date spring units of corresponding ' depth or_ thickness. Accordingly; l have constructed a highly desirable mattress wherein the upper compartment t! encloses, under slight compres~ sion, a coil spring unit approately six inches in thickness, and the lower compartment el con tains, also under slight compression, a coil spring 4 unit of about four inches inthickness; an over all spring height oi. about ten inches. and with slight downward movement oi’ .either of 65 One advantage of such an arrangement is that the upper marginal wires lI, responsive to com the upper spring unit may be vof a fairly readily pression, the side wall 23 may slide over‘the wire depressible nature so as to respond easily to de II and follow the pad in its inward movement. „~ pressive forces and thus contribute factors of As soon as the compression is relieved, the pad, softness and comfort, while the lower unit may 70 pad covers and sidey walls are restored to their have a' stiffer, 'stronger spring action so as to normal positions, Fig. 6. The described action aiïord a firm foundation and 4prevent or mini- e enhances the sleeping qualities ofthe mattress. The strong duck or other'heavy fabric' sheet I9, besides cooperating in holding the padagainst shifting, provides substantial protection for the mize sagging tendencies. Since the lower spring unit .Il is not required or -desired to yield down wardly to the extent necessarydn the case of the 4 escasos upper unit 33, the former may be of relatively small depth as compared with the latter. `Thus, it will be readily appreciated that the' nection with certain types of spring provision of a mattress having a surface or top pad of sponge rubber and an underlying assem changes and modincations may be bly of spring units of differing supporting cher units and pads might be used, and various de without departing 'from thel principles of my invention, the scope of which is to be determined by the acteristics, all enclosed within an integrated en velope or ticking, constitutes, in and of itself, e, novel and advantageous contribution to the ort. Accordingly, while this arrangement has been shown in e; ticking equipped with the desirable . feature of the spring removal opening 2t, it will be understood that the ticking, with sponge pad trate upper and lower` compartments, o îlet coil “spring assembly in the lower compartment end top layer, may completely envelope the duel or superposed spring assembly and be stitched sub ment and extending marginally outward beyond stantially permanently thereeround, devoid oi’ any slit or opening. correspondingly, the inter nal partition 3i] may be omitted, although it is l and a certain kind of foam rubber‘paci, other spring appended claim. ‘ 'What I claim is: A unitary composite spring,r and pod mattress structure comprising a fabric envelope with sep a flat spongy rubber pad in the upper comport the surrounding wall of the lower compartment, and an attaching strip or fabric extending oround the spongy rubber pad end edhesively secured to the underside of the outwerdly erb generally advisable to employ a layer of fabric, such as burlap or the like, between the lower face 20 tending margin thereof, said attaching strip be ing secured along its outer margin to the periph of the upper spring unit t3 and the upper face ery of the upper compartment and elong its in of the lower unit 34 in order to prevent the noise ner margin to the top oi' the surrounding wall of and wear which would otherwise occur incident the lower compartment. to relative movement between the said faces. While I have described my invention in con MARION MORGAN CUNNINGHAM.