USRE14482E - Tensional joint - Google Patents

Description

C. J. ROTHERMEL.

TENSIONALJOINT. APPL'lcATloN FILED FEB. 1s. |918.

Reissued June Il, 1 918. 14,482.

Invenor: Curzls J. Rahermel B 1mm #Arm UNITED 4STATES PATENT oFFIoE.

CURTIS J'. ROTHERMEL, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGNMENTS, T SIGNODE SYSTEM, INC., OF CHICAGO, ILLINOIS.

TENSIONAL JOINT.

Specication of Reissued Letters Patent. Reissued June 11, 1918.

Original No. 1,123,805, dated January 5, 1915, Serial No. 831,607, led April 13, 1914. Application for reissue filed February 16, 1918. Serial No. 217,700.

\ To all whom it may concern.'

Be it known that I, CURTIS J .,BorHERMEL, a citizen of the United States, and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improve-f ments in Tensional Joints, of which the following is a specification.

The obj ect of my invention is to provide a sealed joint for the 'mutually overlapped ends of a tension resisting box strap, wherein the joint comprises mutually interlocking deformations in the strap ends and in a stiff reinforcing girth, each of said deformations being capable individually of oifering substantial resistance to tensional strains on the strapping, and when coperating with the other deformations resulting in a simple but very strong joint for especially designed tension resisting purposes.

In the drawings Figure 1 is a plan view of a joint constructed according to my invention;

Fig. 2 is an elevation thereof;

Fig. 3 is a sectional view on line 3 of Fig. l;

,Fig. 4 is Fig. 2.

To join a strip or band 8 of flexible metal, I apply a girth 9 of flexible metal by bending it transversely about the overlapping end-portions and bringing the ends of the girth-strap closely together. A suitable crimping tool is then applied t0 the girth to indent it on one side between its edges and protrude it correspondingly on the op osite side, thereby similarly crimping the ouble thickness of the band 8. The joint thus produced forms a very strong splice, the strength of which may be increased by using thicker metal for the girth. Thus, where the rstrapping is not in itself stiff a sectional view on line 4 of enough when supplied with 'a transverse crimp such as shown in the drawings to result. in a joint which can stand heavy tensional strains if supplied merely with a light girth, the strength of the joint can be rendered suici'ent for the desired purpose by employing a heavy or thick girth which will afford strong tension-resisting shoulders to assume the tensional strains and resist the tendency of the deformations in the strap ends otherwise to pull apart.

I have more immediately devised this form of my improvement for splicing the met-al straps fastened at intervals about cylindrical crates used for shipping linoleum, and the like, in rolls. The splice is made in a space between adjacent staves of the crate, either withone crimp, as shown, 0r with more than one where the girth used is suficiently wide. The protruding face of the crimp then extends inwardly'to avoid proj ecting it beyond the face of the crate, where it would be liable to catch when'one crate is dragged across another.

As will be seen, by crimping the solid metal girth into the strap-sections inside it, strain tending to undo the splice would have to straighten out the crimps in the overlapping ends before they can be pulled apart. This is practically impossible, however, since the double walls of the crimp in the girth so confine between them the correspondmg sections of the overlapping band-ends as to effectually resist straightening of the latter.

The joint of my invention is a sealed joint and cannot be tampered with without detection. Furthermore, the interlocking deformations in the two strap ends and vthe two sides of the girth each has the capacity to afford substantial resistance to longitudinal strains on the strapping; and when each of these deformations mutually reinforces and is reinforced by the deformations in the other three layers o f stif metal, an extremely strong joint for tension resisting purposes is, formed and one peculiarly designed for use on box strapping or for strapping extremely heavy bales or crates of linoleum. A

Having now described claim 1. A splice-joint comprisin the mutuallyoverlapping ends of a lexi le-metal strip and a flexible-metal girth encircling said ends, said girth and overlapping strip ends being simultaneously crimped together, whereby said strip ends are confined at their my invention, I

crimp between the crimped walls of the said multaneously crimped together, whereby said strip ends are confined at their crimp between the crimped walls of said girth. 3. A sealed 'olnt for the mutually overlapped ends ofJ Hat tensional boX strapping comprisin in combination the mutually overlappe tensional strap ends and a reinforcin girth comprising a strip of stiff metal ent around the overlapped strap ends, the strap ends and reinforcing girth bein thereafter simultaneously crimped to affor overlapped strap ends,

a conjoint deformation, transverse to the strap ends, in both strap` ends and in the Walls of said reinforcing girth and on both sides of the strap ends, whereby the strap ends and girth are provided with conjoint interlocking transverse deformations and a tension resisting joint thereby; produced, in which each of the strap ends andsides of the reinforcing girth contribute tofthe tensional strength of the joint bythe mutual effect of their interlockin deformations..

4. A tension resisting joint for tensional kbox strapping comprising in combination 1 sion on the ends from being pulled out of their interlocking deformations."

5. A method of forming a tension-resistingjoint connecting strap ends and adapted to resist heavy tens1onal strains on the strap, which comprises 4assembling the strap ends overlapped in face to face contact, with an embracing flexible metal reinforcing and strengthening girth having walls of a thickness sufficient to render them effectually stiff when flexed and resistant against being straightened out; and simultaneously crosswise of the strapI crimping the strap ends and girth, and forming in them mutually interlocking, abrupt tension-resisting bends or shoulders disposed across the line of tenstrap, whereby the double embracing walls of the crimp in the irth so confine between them the correspondlng sections of the overlapping strap ends as to resist ei'ectually the straightening of said bends or shoulders.

6. A tension-resisting joint for tension resisting box-strapping comprising, in combination, two mutually overlapped vbox-strap ends and a reinforcing girth, crimping means for deforming the material of said strap ends and girth crosswise of said straps.

VIn witness whereof, I hereunto subscribe my name to this specification in the presence of two witnesses.

CURTIS J. ROTHERMEL.

Witnesses:

JOHN Romans, CHAs. B. SWIFT.

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