US605470A - Fastening device for tubs - Google Patents

Description

(No Model.)

E. T. BEADISH. EASTENING DEVICE EOB- TUBS, BOXES, (Kw.

N0. 605,470. Patented June 14,1898.

Ilnrrnn e Starts ferent @Frise FREDERICK T. BRADISII, O F BOSTON, MASSACHUSETTS, ASSIGNOR OF TWO THIRDS TO ALONZO G. BRADISII, -OF MEDFORD, AND

OF MALDEN,` MASSACHUSETTS.

C. FRED FELLOVS FASTENING IJEVlCE` FOR TUBS, BOXES, 84.0.

sPncIFIoATroN forming part of Letters Patent No. 605,470, dated .rune 14, 189s.

Application filed August 1l, 1897. Serial No. 647,834. (No model.)` i

A To all wiz/011e it may con/cern:

Be it known that LFREDERIGK T. BRADISH,

of Boston, county of Suffolk, State of Massa` 1o This invention relates to staple-like devices employed in securing the covers or tops of wooden tubs, boxes, pails, and the like, and

has for its object the improvement of the` fastening device forming the subject-matter of United States Patent No. 517,836, granted to me April lO, 1894. In the staple-like fastenertherein shown the crown is provided with serrations or depressed portions constituting lines of weakness transverse to the 2o length of the fastener, so that when bent over the edge of a tub or box the fastener will bend squarely at one of such weakened portions.

The fasteners are in practice usually made from coppered or tinned wire, swaged or shaped by suitable dies, and it has been found that the swaging to form the thin portions of the crown acted to greatly compress and harden the metal, making it so brittle that it had to be afterward annealed to restore its 3o softness and permit bending of the fastener production of a staple-like fastenerwhich can be readily bent without annealing and` 4o recoating subsequent to the swaging. I accomplish this object by reducing the crown in thickness to enable it to be readily bent.

transversely, but a longitudinal strengthening-rib is extended along thecrown, the action of the forming-dies leaving the rib comparatively soft and iexible, so that when the fastener is bent the rib will not break or rupture. By such construction I retain all of the valuable features of my patented fastener 5o referred to, while entirely obviatingtwo nec-v essary steps in its manufactureand greatly reducing itsA cost.

I i Figurel is an vunder sideview, enlarged, of

a fastener embodying this invention. Fig. '2 isa side elevation of the fastener shown in Fig. l. Fig. 3 is an enlarged transverse section thereof on the line @c Fig. 2. Fig. 4 is a detail showing one of the fasteners as it 'will appear when driven into a tub or box.

The driving-legs a a, joined bythe crown 6c or top bar b, the latter of sufficient length to. adapt the fastener for the work for which it is designed, the auxiliary bends h2 at each end of the crown, andthe raised flattened tops b3 of the bends, forming driving-faces, are and may be substantially as shown in my patent referred to.

In the fasteners shown in Figs. l to 4, inclusive, the crown ZJ is provided, preferably, for the greaterv part of its length with a series 7o of seri-ations or depressions b of a depth and size depending upon the size of the fastener and the character of the articles to which it is to be applied, such depressions or serrations, however, being always of such depth that Athey constitute cross-lines of weakness in the crown, so that the latter when bent in either' direction will naturally follow one of such lines'of weakness.

As the fasteners are preferably made of 8o round wire, the action of the dies spreads the crown laterally as itis decreased in thickness -by the formation of the depressions orv serra- `tions b', and the thinned metal is so compressed that it is hardened and made'eom- 85 `paratively brittle at the lines of weakness.

To obviate annealing and still maintain the 4strength and integrity of the crown when crown of which has transverse lines of weakness in hardened comparatively brittle metal loo crossed by a longitudinal strengthening-rib of relatively soft and readily-bent metal having little tendency to fracture or breakage.

By serrating or forming the depressions on the under side of the crown the latter is more easily embedded in the wood when the fastener is applied, the raised portions 19X between the serrations and the strengtheningrib b5 when so embedded acting to prevent lateral displacement of the fastener or working of the cover with relation to the tub or box.

I may duplicate the strengthening-ribs, if desired, and the exact shape or construction of fastener is not limited to the shape or construction herein shown. So, too, the auxil# iary bends at the ends of the crown may be omitted and the serrations or depressions may extend for a greater or less distance along the crown without departing from the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The herein-described staple-like fastener, comprising two driving-legs, a connecting integral crown provided with serrations or depressions to form transverse lines of weakness and facilitate bending of the fastener, and a strengthening-rib extended longitudinally of andr integral with the crown, substantially as described.

2. The -herein described staple -like fastener comprising two driving-legs, and a connecting-crown provided `with transverse indentations or depressions to form lines of weakness, said crown also having an integral longitudinal strengthening-rib crossing the indentations or depressions, substantially as and for the purpose described.

f3. A staple-like fastener having two driving-legs, and a connecting-crown, the main portion of which has transverse lines of weakness in hardened and comparatively brittle metal, an integral longitudinal strengthening-rib of relatively soft and readily-bent metal crossing such lines of weakness, substantially as and for the purposes described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

4FREDERICK T. BRADISH. Witnesses:

LAURA MANIx, FREDERICK L. EMERY.

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