US2610374A - Bundle-binder seal - Google Patents

Description

. 56912.16, 1952l Y J. H. LESLIE, 1I 2,610,374

BUNDLE-BINDER SEAL 2 SI-IEETS-SHEET l Filed Sept. 3, 1948 v "'l. lll l|| hun "Uilm v GJ. lll

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.1. H. LEsL|E,1I

Sept. 16, 1952 BUNDLE-BINDER SEAL 24 SHEETS-SHEET 2 Filed sept. s, 1948 Patented Sept. 16, 1952 UI'\`11TED? `z`vs'lfATEs rArENfr A OFFICE 'Y i 2,610,374. l f

BUNDLE-BINDER SEAL `lohn H. Leslie II,"Evanst'on, Ill., assignerv to Signode Steel strapping Company, Chicago, 111;, a i `corporation of Delawarer Application septemter 3, 194s", sei-iai No. 47,563

My invention relates to' an improved bundle-v metal, although the advantage pertains in some degree to any strapped package, it is highly desirable that a strap joint be ilat on both its inner and outer surfaces. Joints protruding inwardly cessive pressure or impact is brought to bear on the joint asin the course of handling or stacking. In the case of sheet metaLthe sheet or sheet edges adjacent the seal will lloe injured, `and frequently, if the sheets are thin, the injury: or dent will be transmitted to mar vseveral sheets interiorlyv of the outer sheet. Joints protruding outwardly from the bundle can do similar harm to other-material which may be brought against the seal in the course of handling or stacking, and outwardly protruding joints can interfere with Vthe sometimes desirable sliding of bundleon-bundle or on other objects, and, by catching against other joints or objects, tend to loosen and displace the binder straps. This flatness, of course, should be obtained with a minimum loss of strength in the union or joint between the overlapping ends of the bundle-encircling loops of strap binder.

The joints characterized by these protrusions,

i. e., sheared and offset portions of thefjointl edges to perfect the juncture, have a second'fiaw. Again, when great pressure or impactr may be applied to the joint as in handling, the protrusions may be flattened to realign substantially the sheared portions with the bodies of the elements from which they were formed. This reduces the strength of the joint materially. Were it possible to bend these tabs or tongues sufciently for a strong seal and still contain them within the limits of the inner and outer surfaces of the joint, the tabs would be protected by these surfaces from being straightened by impact or pressure. This myl invention accomplishes.

One object of my invention, therefore, is to provide a seal for a strap joint which, while maintaining good strength characteristics, has no projections from either the inner or outer surface, that is, either toward or outwardly from the bound bundle.

Another object of my invention is to provide a steel strapping joint which is not subject to loosening by excessive pressure being applied to the faces of the seal.

".2l claims.' (ci. 24j-213) toward the bundle may cause serious damage 10' to the material strapped in the event'that exments of joint strength may dictate.

Other objects'and advantages'will become vapparent from'the description anddrawings, 'of which:

Fig. 1 is 'aplan viewoi ythe o uter surface of va strap joint'employing a'seal embodying the features of my invention;

Fig. 2 is a plan view of thefinner surface of a joint I Fig. 3 is a section `onkthe line 3--3 of Fig. 1;'-f`

Fig. 4 isa reduced section on the linel li--ll of Fig. 1; r

Fig. 5 is a perspective ofA overlapping strap portions'suitably arranged forv sealing, showing a seal in placement position thereover.; and

Fig; '6 is a perspective view of the completed joint. Y y. n'

`The vseal embodying my invention comprises primarily a rectangular piece of metal having segmentsy on opposite sides thereof bent relative to the 'main portion to define a back plate lll,' whichreally'forms thefront or exposed side of n a finished joint. This back plate I0 is approximately equal in Width to the width of the strap for which the seal is to be employed. Twol flanges I2 depend from its opposite edges. In the particular embodiment here shown each flange has two rectangular openings or windows It formed therein. The number of windows in each ange may be varied as desired or as require- I have chosen tov explain a seal having two windows in each flange. These windows are located to lie wholly within the area of the flange in which they occur, theV inner edge I6, however, being closely adjacent tothe seal back plate I0. The exact positioning of the inner Window edge I6 is such that, when the seal is folded, this edge will lie approximately at the center of the fold.

In the production of a seal joint the seal is placed over the overlapping ends i8 and 2!) of the strap surrounding a bundle with the flanges directed inwardly toward the package. With an appropriate tool the flanges are then folded in so as to lie in a plane parallel with the plane of the back plate, enclosing the strap ends i8 and 2B to dene a strap-seal resembling a sandwich. The back plate l0, being of solid metal, has greater rigidity than the perforated flanges. The bend, therefore, will occur in the anges without deformation of the back plate and hence the minimum spacing of the fold edges may be predeterminedrwith accuracy without using the strap edges for its definition. This feature is of importance when it is desired to tensionthe strap around a bundle after the placement and partial folding of the seal because, by employing relation between the edges of the tongues 24 a seal designed in accordance with my invention, formed in the edges of the overlapping strap porthe folds may be spaced from the strap edges tions. Thus, not only is a strong and dependable to avoid crimping or undesirable pressure of the joint produced but also, since the offsets project seal thereon. In this fashion the strap portions 5 into but not inwardly beyond the windows, the are maintained slidable relative toV the seal and joint is flat on both its inner and outer Yfaces.

each other. Having described the nature and one embodi- After thuszfoldingether.steelsflanges-about, theyr mentY ofamy invention, .what I claim Y. and desire overlappingsstrapgendsl. either priorita or after'f; tof-.secure iby,;Ltters Patentrof the. United States the strap has been tensioned, relatively longitul0 is:

dinally narrow notches or tongues 22, substangf,V` 1. A binder strap joint comprising overlapping tiallf the width of the flange windows, are rst ends of the strap and a seal consisting of a back formed in the back plate and edges of 'theover-i` plaitefandfiianges surrounding and tightly fitting lapping strap ends and theniofset inwardly into i. about-,tha;overlappngfstrap ends, the flanges of but not beyond the window openings:v Infthisnls:theseahhaving openings wholly within the flange operation the tongues in the back plate are proborderspandvthetback plate and overlapping strap duced by actually slightly shearing -the metal ends being Sheare'd inwardly 310mg Opposite edges thereof substantially in line-"Withthe'edge's=|1 i tdfdrmz-tonguesyvhich are offset to prOjeCt into of the Windows. It is, however, frequentlwnnbutnotvbeyond the Openings in the Said anges. necessary similarly to shear the edges of both 20 2. A binder strap joint. comprising overlapping strap ends because `frequently andgunder some ends ofthe strapanda sealconsistingpi a back conditionsv 'the .edges .ofltlie strap, ends-.can..be plate',and'ianges.,surroundiiignd tightly fitting offset "sufiently to provide adequate interlock; aboutJ-.tlrie-nverlappiignstrapends,` the iianges of. bymerelybending intogbut not beyond the flange the sealh'aving .openingslwholly within the flange,

windows small'sections or tongues. thereoL The. 25 borderarand the,back-.platey and edges of the overaim is 'that 'tongues formed'.`irbothLthabckl lappingstrapends'beingpiset inwardly into but plate and the overlapping*strapl ends'i of '.'subl notQbeyond theilangenpenings; so as .to provide stanti'allythe same width as the flange windows. shoulde'niritrloclisf:against'relative longitudinal be oiset inwardly ,suciently to lprovide pulllfremovement Abetweenthe' Iseal and the 'overlapping vsisting`interlockingshoulders but-,not'sufiently 30fstrap,endsfandjbetwe'en the overlappingg'strap;

tocause the tonguesappreciably to pr'ojectir'ifs ends". Y

wardly beyond` the windows. JOHNHLESLIEII.

By locatin'glftlie flange windows leritirelymitlfiln Y the areaofrnenange inzwhrcnthynre idcatdf REERENCESCITED" moresmal'l tongues are rstsheared into each.. fue of,gthispa,.bent;; side of the back plate and then Athose tongues are oisetA inwardly 'carryingmritlitliem `somev'fhat UNITEDTATE S;

corresponding edge 'portions '-of'itli'eoverlappig Nmbr'" Name'.` Date strapends; the tonguesrfronrthe'-backplate `vnotaio 9973186 Flora? July'4, 1911 only "themselves actas ziiiterlgcks'.betvveenllthe` 2,062,099 MSCLCIESHBY'; NOV. 24, 1935 strap'ends "butte'ndto"`retaintlieinterlocking 2,118,158' Crlson May 24, 1938

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