US2474657A

US2474657A - Roll packaging means

Info

Publication number: US2474657A
Application number: US1360A
Authority: US
Inventors: Corson Ralph
Original assignee: Congoleum Nairn Inc
Current assignee: Congoleum Industries Inc
Priority date: 1948-01-09
Filing date: 1948-01-09
Publication date: 1949-06-28
Anticipated expiration: 1966-06-28

Description

June 28, 1949. R. coRsoN ROLL PACKAGING MEANS Filed Jan. 9, 1948 IN VEN TOR.

zw w

Patented June 28, 1949 t 7 2,474,657

UNITED PATENT OFFICE ROLLPAGKAGING MEANS tt lnltflotson. Arli gton N- J-i ess eoor t oege et i .1 51 m!l ne. e o p e on o N ork Application Jon ooy 9, 1948. SesislNo. L360 1 10 Cla ms. (Cl.206+-59) h s nventi n te etesto meet r eeeleeeioe heet mate ial is provided which is in the form oil d sh et mete ielt speoie l-y trolled h et f e drum need hich i o u ed and hock mate ie Of t heavy or bulky ehelreeter such as resisting constrllfitiou but Wh ch comprises. a .95 1 1115 linol um or elt l os ard go d arry ng ember hat ermits a limit d amount One f t pro ems thetoontinuelly o ifront 5 ne u ine displaeement ttleswpmg 9f he menuiee i er o rol d s ee mete ie arhe oll e uv lu ions re tive t t e l exisii y w n e r lle sheet m riel i bulk his drum head issuoh that it can be mai t in d. nd h a y is t eeooemieel ooelieeine of e n positi nhy e lug whioh .is se ure r o and material n J- h a way that it will reach the which is adapted to fit within the central core us me i hout ama Rol of linol um an 10 f the rolled sheet ma eriel e. e, a hollow tub felt a e yar goods may be it ee ie eet in bout w ich the es oi the roll are wound and n h en ma wei h up o e ooro o eouncis is s ch that when so ain ain d n p sition it rmo en sh nni g emi ee one trerisf rrine ill remain in ll sition notw thstan ing se ere he heavy rolls, the goods age irequeg tly drqpped blows and impacts, even though the over-all n e menne to exemn oblique y or edee i e, ngth oi he rolled sheet m te l is m rely s i tuot the end lse of th oll teee ves o heavy ove r cl with a p per wre pereeau e, of the blow, the result (if; suehhlows the edges of the special construction of the drum head with a loa q at iel wi h re some he ir-ie a e of n: arrying memb t that permits limited lo i udiuh tentiel y demesedel relativ disnl eem n o t les oping of the In the past it was the reetioe to wrap e r011: roll, onvolutioi longitudinally of the r ll axis, of lin leum or felt b se Yard. seeds n p er end my eh orme eh oks su h as may occur w en he Pltce the pd ol in o suitehleoret out oll. is qrooped on on end edge of the. roll, a is ereetiee s-so x ensi e that in recent years. dissipat d through the body of the ro l ofsheethe use ef e s hesbeen, bend n d fewer of. material itself over at period of im d r ng hieh unereted l t elopeti neokeees- MQlQQ BI he rmitted telescoping takes place. Th r s l he f ra es did n t neeessetily te ultin the t ettlie inert a- .force of he p i which are im netion o dama e to he one ed es o rol s ermi ted t teles ope is he m e ly ssipat d, p lie e l nd this c ion eorre -ond ne y d min she l e I11 order to protect the gangs oi ur creteq page shock forces imposed on the edges fthe plies-1p. wra pe roll dsheet eter el t hes eretotore he mmediate zone o c nt ct with result n ee Proposes to olee e disk; or plate whose ssening o the likelihood of d m t s t iameter 'oor spoeds with he diamete of the pa ent. theretoret that the nc p ed y oll t ea h, nd'oi the 1e 1 end o ma ntain the he drum eed ok elo rh n means of tifis or s or me e ieplee u ua ly by means of it t me nvention is basically diff rent as. compa d with oot-r el th Iefi and nte ing; the hollow core of disks orthe like which have heretofore. been pmthe rolled. sheet ma erial, owever, when e h evyosed to: pm eotine the ends o paper-wrapped Qll is drQP-ReQ especia ly if the mpact is OQIl-s packages of rolled sheet material and wmeh e i reted t an endedee'ot he. roll th edges of beeeu eof thei d sign pre ent any t le opin the p es t th en of the relleolsheet ma er e whateve oi e l s, ee vine the imee t are it o e y substan lly 4o Fea u s o th s ock a so bi g a s of th ee o M eo er! dueto he se e -i se f uelr vention r late to. the pr vision of e u d i l e s Q e et me eteineo t t e end, onst ie i o tiereie th lo c r i g rnember of t the 0 ree ivioethe imn et s o enrdi p e i s in thefoitm o e eon-tro s! ep u d 5 5 and. diseng ed eomeletely tem, the r l-. 7 herein. an ermiiler space is. interposed be e n I s. o ob e t of is inventi n p i e ei eeo e toad. eer-tying di kemi an outer cover disk tive means or et te ine ttie ends of eepe dieee tth ee nheries thereof Seeur d to the wrapped packages of rolled sheet material. It is inside 0,? the, cover is a plus Wh x e ds e r h r bj t of the inven ion o rovide such hrou h the e rtii e sn the leedv eeriying disk for fi e ve p o ection by means, whieh are eco,v penetration into a tube or the equivalent abo t. mieeleo l. oteetioe i l i1l UKLQHSBQQU me erial s olled so as to kee Aeeotdine o thi im tiottins eedot uti izing e dime been prop y sent/erode P-reiemiiiy e11 nd pp r tot rolleqshe tme e ie which is going, h s, essoeiet d er w h ongs wm P id s q al loeci eerrying sepoo t fo al of xve o r tain th plug in he roll tube a ter it h p i of t e roll novel sh k: bsor in meet es teem nserted thereto Th rum head ce for en en lo the oeoet-wreeped eeekeeeo tol e o e e s ii eble o r e rou h ee plies of the rolled sheet material but is yieldable to permit substantial bending of the load carrying disk inwardly from the spaced under abnormal load conditions such as may occur as the result of dropping the packaged roll of sheet material. Such abnormal loads which are imposed when the packaged roll of sheet material dropped, result from the tendency of the plies of the rolled sheet material to telescope longitudinally of the roll, and according to this invention,

this telescoping is permitted because of the nature of the support for the load carrying disk and because of the yieldable character of the load carrying disk, and the portion of the load carrying disk within the internal diameter of the spacer bends to accommodate itself to the telescoping of the plies while oifering resistance thereto. At the same time, the construction of the drum head is such that its structural integrity is not impaired under such abnormal conditions and it remains securely inposition so as to continue to afford the desired protection.

Further purposes, features and advantages of 5.

fiberboard sheet substantially 0.2 inch in thickness. The load carrying disk has the circular aperture I4 in the center thereof which is of substantially the same diameter as the internal diameter of the tube I I.

The shock absorbing means also comprises the cover disk I 5 which likewise may advantageously be made of 0.2 inch fiberboard. Interposed between the load carrying disk I3 and the cover disk I 5 there is the annular spacer I6. Any suitable material can be used for this annular spacer. One satisfactory and inexpensive construction for the annular spacer is spirally wound chipboard. For use in packaging linoleum rolls the annular spacer may be aboutv inch in thickness longitudinally of the roll and may be about 1 inch wide radially from the axis of the roll. The annular spacer can be maintained in position by any suitpackaged rolled sheet material embodying this invention,

Fig. 2 is a perspective view on a larger scale of the structural elements of the shock absorbing means at one end of the packaged rolled sheet material shown in Fig. 1, these elements being shown in separated relation to improve the char-- ity of the showing, and

Fig. 3 is a sectional elevation on a larger scale of the lower end of the packaged rolled sheet material shown in Fig. 1, showing the position of the parts after the packaged rolled sheet material has been subjected to impact at a point on the lower end edge thereof.

The roll of sheet materialis indicated generally in the drawings by the reference character I 8. For purposes of illustration, the roll may be a I roll of linoleum floor covering, The linoleum is wrapped in the form of convolutions about the central core II which may be in the form of a chipboard tube. The diameter of the tube may be selected as desired but for a heavy roll of linoleum the internal diameter of this tube may be substantially five inches. The convolutions of the rolled linoleum form the succession of plies I Z. The outer diameter of the roll will, of course,

depend on the yardage contained in the roll. Usually the yardages contained in rolls packaged for shipment are standardized with the result that the roll diameters run nearly constant depending on the predetermined yardages for the rolls. Usually these diameters, in the case of rolled linoleum, range from about 9 inches to about 13 inches.

In Figs. 1, 2 and 3 the novel shock absorbing means of this invention at the lower end of the roll is shown in detail. This shock absorbing means comprises the load carrying disk I3. For

carrying the load imposed by a roll of linoleum this load carrying disk may be in the form of a able means such as the wire staples I! driven through the load carrying disk and also through the cover disk into the body of the annular spacer I6. The annular spacer I6 is disposed so as to support the load carrying disk adjacent to the outer plies of the roll I0. It is-to be noted that the inner portion of the load carrying disk is unsupported and that the spacer I6 provides substantial spcaing between the load carrying disk I3 and the cover disk I5, thereby permitting substintial bending of the load carrying disk inwardly from the annular spacer I6 without coming in contact with the cover disk.

In order to maintain the drum head provided by the load carrying disk I3, the cover disk I5 and the spacer I6 at the end of the roll and in order to keep it centered relative to the roll, the plug I8 is provided. This plug has an external diameter corresponding to the inner diameter of the tube II Thus if the internal diameter of the tube II is 5 inches the external diameter of the plug likewise is 5 inches. The plug I8 extends through the aperture I4 in the load carrying disk I3 and is not secured thereto in any way. However, the plug I8 is secured to the inside face of the coverdisk I5 as by the nails I9. The plug I8 may conveniently be made of wood.

The plug I8 is seen to be adapted for insertion in the tube I I and when so inserted keeps the drum head in properly centered position relative to the roll I0. It has been found desirable in the practice of this invention to provide the plug I8 with tangs which are so directed as to permit insertion of the plug I8 into the tube I I while affording a grip which holds the plug in its inserted position. 'These tangs can be provided simply by a U-shaped spring clip 20 which fits over the bottom of the plug I8 and which has upwardly extending arms alongside the periphery of plug I8. These arms are provided with the tangs 2i which are pointed and are downwardly inclined. Preferably the arms of the clip 28 extend beyond the end of the plug I8 and have inwardly turned ends 22 to facilitate entry of the arms into the tube I I. The clip 20 can be made of spring steel, and the tangs can be formed therein in any suitable way, e. g. as by stamping. The upper end of Figs. 1 and 3. For further protection to the end i of theroll-ed sheet material, and in order to assist in maintaining the shock absorbingdrum head in place, the drum head and the lower end of theroll may be covered with a suitable covering of flexible sheet material 24. Any flexible sheet material of suflicient strength and toughness may i be used for this purpose, e. g. burlap. In order to keepthis covering snugly in place over the drum head and over the end of the roll to which thedrum head is secured, the drum head and the surface of the paper wrapper 28 adjacent thereto may have glue applied thereto before the coveringis placed thereover, and in orderto assist in keeping the covering in place about the lower end of the roll two strips and 260i gummed tape may be applied. As shown in Fig. 1, the

shock absorbing and protecting means at the lower end of the roll ordinarily is duplicatedat the opposite end ofthe roll sothat each end of the roll may be protected. If desired, the paper wrapper 28 may be omitted and in such case the outermost convolution of the rolled sheet material acts as a wrapper for the inner convolutions. employ the wrapper 28 of paper or similar sheet material so as to protect the outermost convolution of the packaged rolled sheet material throughout the length thereof and so as to provide. a suriface'to which the covering 24 may be made adherent, as bythe use of an adhesive.

without damaging the surface of the outermost convolution of the rolled sheet material. While specific means have been described and shown for maintaining the drum head and positioning The way by which the improved shock ab- 7 sorbinq means of the packaged rolled sheet material acts to prevent damage to the rolled sheet material when the package is subjected to irn pacts may be illustrated in connection with the embodiment shown in the drawings, with particular reference to Figs. 1 and 3. In Fig. l the packaged roll of linoleum is shown in a tilted position such as that which it may assume when handled by a workman in unloading the rolls from a truck or freight car. Fig. 3 illustrates the action of the shock absorbing means of the package in the event that the packaged material in the position shown in Fig, 1 were to be dropped. Upon contact of the end edge of the packa e with the floor or. pavement 21 the resulting shock is dissipated in the body of the roll due to the fact that the inner plies of the roll are permitted to telescope in the direction of the roll axis. In Fig. 3 the substantial telescoping of the plies is shown with the attendant bending of the load carrying disk 13 inwardly from the spacer l6. Of course, the plies of the rolled sheet material immediately overlying the spacer are brought to anabrupt stop when the package strikes the floor or pavement 21, but instead of having the However, it is ordinarily preferable to force neaessarrtororerccme he i ertia r e.

entire mass of: the 120.11 cencentra ed he ed es of the outer plies at. the. zone o c ntact. as wo ld be the caseir the. entireroll w r br u h t n I abrupt. stop. by use; of a. rigid protectingk.

the inertia oithe, plies within the inner diameter of: the spacer is largely dissipated during the sub:

stantial interval oi time within which the per-.- mitted telescoping takes place after the momentof initial contact with the floor or pavement. Therefore, much of the inertia of the falling roll is dissipated in overcoming the friction required to effect the telescoping and in bending the load carrying disls'and the outer plies of the roll in the zone immediately above the point of contact are not subjected to a sudden application of the very great force that would be required in order to eflectan immediate arresting of the inertia of'the entire roll. Because of this action the force applied to the edges of any of the plies in the roll at any onetime is greatly reduced and the likelihood of damage to them due to impacts received at the end of thepackage is correspondingly reduced.

Further in connection with the foregoing description of the action of the shock absorbing means of this invention in minimizing the severity of shocks against the edges of plies of the rolled sheet 'material, it is preferable, in the practice of thisinvention, that the cover disk lb of the drum head embodiment that has been shown anddescribed, as well as the load carrying disk, be composed of yieldable material. When the cover disk [5 is composed of yielda-ble material, this element of the shock absorbing means may likewise yield to some extent to accommodate and permit telescoping of the plies inthe roll. Such action may be desirable, e. g, in the case of extremely heavy impacts that be received when a roll positioned as shown in Figs. 1 and 3 is dropped from a considerable height. In Fig. 3 the cover disk l5 not shown dished outwardly, but if the received impact were of sufficient severity, resilient material. used for the cover disk l5 would permit it to dish outwardly soas to augment the cushioning action of the shock'absorbing means and so as to mini" mize the likelihood of the shock. absorbing means becoming displaced.

The efiectiveness of-the novel shock absorbing means of this invention has been demonstrated as the result of thorough testing under very severe dropping tests conducted both at 25 F. and" at '75 F. using rolls of linoleum for these tests. When ordinary end protecting disks were employed in these tests the edges of some of the plies'of the rolled linoleum were severely damaged. When, however, these linoleum rolls were packaged employing the novel shock absorbing means of this invention and were subjected tothe same tests under the same conditions; the edges of the piles of the packaged linoleum were not appreciably damaged.

While this invention has been described in connection with a specific embodiment for purposes of illustration, it is apparent that the specific construction mentioned can be varied. Thus instead of making the load carrying disk and the cover disk out of fiberboard, any other suitable material can be used such as other pressed fiber sheet ma terials, pressure molded or laminated plastic sheet materials, vulcanized materials such as vulcanized rubber, etc. The diameter of the disks ordinarily will conform to the outer diameter of the roll of sheet material with which the shock absorbing means of this invention is employed. The thickness of the load carrying disk will depend on the material employed, the diameter of the unsupported portion of the load carrying disk and the weight of the rolled sheet material carried by this unsupported portion. In any event the load carrying disk should be adapted so that the unsupported portion thereof will support the plies of the rolled sheet material under normal conditions of storage and shipment but will be yieldable to permit substantial bending of the load carrying disk inwardly from the spacer, to accommodate telescoping of the plies as the result of shocks and sudden impacts. The predetermined normal load carrying capacity of the load carrying disk is, of course, readily determinable utilizing the principles of this invention so as to be appropriate under varying conditions depending principally on the size and weight of the rolls that are packaged.

It is ordinarily the case that the outer or cover disk will have approximately the same load carrying characteristics as the load carrying disk, and for this reason it is usually convenient to make both the load carrying disk and the cover disk out of the same material. Moreover, it is usually preferable that the load carrying disk as well as the cover disk be made out of resilient material so as to permit dishing for accommodating the telescoping of the roll plies and so as to provide at the same time a springing action tending to move the plies toward their original position after the maximum amount of telescoping caused by an impact has occurred.

With regard to the annular spacer, it can be made out of any suitable material. While wound laminations of chipboard, linerboard, heavy paper and the like are inexpensive and are effective, other materials such as molded plastics, or plastic-- fiber compositions may be used, or vulcanized materials such as rubber compositions may be used. Of course, any suitable means for maintaining the parts in their desired relative position may be used such as stitching wire or adhesives, e. g., glue.

It is apparent from the foregoing that according to this invention packaging means is afforded which effectively solves the problem of protecting the end edges of rolled sheet material due to accidental shocks received during shipping, transference or other handling of the rolls. This has been accomplished in a novel manner and by the employment of shock absorbing means that can be made of inexpensive readily available materials, and that can be manufactured and installed at a low fabricating cost.

While this invention has been described in connection with certain typical embodiments and examples, it is to be understood that this has been done for illustrative purposes and that the principle involved and the advantages obtained may be availed of according to this invention within the scope thereof as defined in' the following claims.

I claim:

1. Packaged rolled sheet material comprising a roll of sheet material wound about a central tube, and shock absorbing means at least at one end thereof, said shock absorbing means comprising a centrally apertured load-carrying disk which is arranged to support the edges of the plies of the rolled sheet material at said end, a cover disk spaced from said centrally apertured load-carrying disk, an annular spacer maintained between said load-carrying disk and said cover disk adjacent the peripheries thereof and supporting said load-carrying disk adjacent the outer plies of said rolled sheet material, the inner portion of said load-carrying disk being unsupported against bending, a plug secured to the inner side of said cover disk and extending through the aperture in said load-carrying disk and into said tube, and means for securing said shock absorbing means to said rolled sheet material at said end thereof, said load-carrying disk being adapted to support the load normally imposed thereon by the edges of the plies of said rolled sheet material while being yieldable to permit substantial bending thereof inwardly from said annular spacer to accommodate relative displacement of said plies longitudinally of said rolled sheet material when said end of said packaged rolled sheet material is subjected to impact.

2. Packaged rolled sheet material according to claim 1 wherein said load-carrying disk is composed of fiberboard having substantial resilience.

3. Packaged rolled sheet material according to claim 1 wherein said cover disk as well as. said load-carrying disk is composed of yieldable ma terial.

4. Packaged rolled sheet material according to claim 1 wherein said load-carrying disk and said cover disk are composed of yieldable fiberboard having substantial resilience.

5. Packaged rolled sheet material according to claim 1 wherein strip metal is secured to said plug along the peripheral portion thereof within said tube, said strip metal presenting tangs engaging the inner surface of said tube to prevent retraction of said plug from said tube.

'6. Packaged rolled sheet material comprising a roll of sheet material having a hollow core and shock absorbing means at at least one end thereof, said shock absorbing means comprising a drum head in the form of a fiat load carrying member which is arranged to support the edges of the plies of the rolled sheet material at said end, an annular spacer secured to the load carrying member on the opposite side of said load carrying member and supporting said load carrying member ad- ,iacent the outer plies of said rolled sheet material, the inner portion of said load carrying member being unsupported against bending, and a cover member secured to the opposite side of said annular spacer in spaced relation with respect to said load carrying member; and means for maintaining said drum head in position at said end of said rolled sheet material including a plug secured to said drum head and fitting into said hollow core, said load-carrying member being adapted to support the load normally imposed thereon by the edges of the plies of said rolled sheet material while being yieldable to permit substantial bending thereof inwardly from said annular spacer to accommodate relative displacement of said plies longitudinally of said rolled sheet material when said end of said packaged rolled sheet material is subjected to impact.

7. Packaged rolled sheet material according to claim 6 wherein said rolled sheet material has a paper wrapper thereabout and wherein a covering of tough flexible sheet material is secured to said drum head and to said paper wrapper adjacent said end of said rolled sheet material.

-8. A shock absorbing head adapted for securement to the end of a roll of sheet material to protect said end thereof from damage due to impacts, said shock absorbing head comprising a centrally apertured load-carrying disk, a cover disk, an annular spacer between and secured to said loadcarrying disk and said cover disk adjacent the peripheries thereof providing a support for said load-carrying disk adjacent the periphery thereof, the inner portion of said load-carrying disk being unsupported against bending, and a plug secured to the inner side of said cover disk and extending through the aperture in said load-carrying disk, said load-carrying disk being yieldable to permit substantial bending thereof inwardly from said spacer when the load imposed thereon by the edges of the plies of a roll of sheet material exceeds a predetermined amount.

9. A shock absorbing head according to claim 8 wherein the portion of said plug extending beyond said load-carrying disk carries protruding tangs disposed to prevent retraction of said plug from a tube in which said plug is inserted.

10. A shock absorbing head adapted for securement to the end of a roll of sheet material to protect said end thereof from damage due to impacts, said shock absorbing head comprising a centrally apertured load-carrying disk adapted to be positioned against the end of the roll, a cover disk concentric therewith, a rigid annular spacer having an inner diameter substantially greater than the diameter of the aperture in said load carrying disk, said spacer being disposed between and secured concentrically to said disks adjacent the peripheries thereof to provide a support for the outer marginal portion of said load carrying disk, and a plug secured to the inner side of said cover disk and extending freely through said aperture in said load carrying disk, said latter disk providing an annular support for the end of the roll, that portion thereof inward of said outer marginal portion being yieldable relative to said outer marginal portion to permit substantial bending of said inward portion toward said cover disk when the head is subjected to load impacts.

RALPH CORSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,454,818 Jones May 8, 1923 2,286,500 Morrill et a1 June 16, 1942 Certificate of Correction Patent N 0. 2,474,657. June 28, 1949.

RALPH OORSON It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Column 3, line 10, for the Word spaced read spacer;

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 29th day of November, A. D. 1949.

THOMAS F. MURPHY,

Assistant Uommissz'oner of Patents.