US70503A - baknum - Google Patents

Description

A Mw Janffw r WASHINGTON, D C.

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TO ALL WIIOM IT MAY CONCERN:

Beit known that I, JAMES W'. BARNUM, ofthe city of New Orleans, parish of Orleans, and State of Louisiana, have invented a certain new, useful, and improved device for fastening the ends of wire rope orwire, together, when the same is used for banding bales of cotton; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification.`

Before proceeding to disclose the nature of my invention, or to describe it, I deem it proper to premise that experiment has demonstrated that neither wire rope nor common untwisted wire can sustain anything like a tension that is equal to its normal strength, if at any part of it that is subjected to tension there are anyv short or abrupt bends or lexurcs; hence it follows that if either thc one or the other be substituted for the ordinary flat hoops that are commonly used in banding cotton-bales, it is necessary to avoid the making of any such lexures in order to secure the advantages resulting from the superior strength of the former overv the latter, when that strength is unimpaired by the cause in question. The only way, in fact, by which the full normal strength of wire rope, or wire that is used in banding cotton, can be preserved intact, is to faste'n the' ends together by attaching them to-an intermediate appliance, in which there are curved supports for the said ends, which require the same to assume a gradual and regular incurvation, and thus prevent a suicient lexure from occurring to impair thc original strength of the said rope or wire. Thisfact is so well established that many cotton-ties, the technical name by which such appliances are known, have been made and patented; but, so far as my information and knowledge extend, no device that has yet been produced can be considered free from defects, either of an intrinsic or extrinsic character. Some are too heavy and cumbrous; some too diicult of application in praetice; s0me too costly in the manufacture or making of them; whilst others are too weak to bear .the strain to which they are subjected by thc enormous expansive force that is developed by the elastic properties of the cotton that is confined within the bale, particularly if. the bale receive a sudden concussion from falling from a bluff, or into the hold of a ship, accidents to which every bale'of cotton is mere or less liable.`

In my invention, I have endeavored to produce a tie that does not possess any of the glaring faults that distinguish all that have preceded it, and which sha-ll at once combine in itself extreme symmetry of shape and proportions, greatly diminished weight, as compared with all existing similar contrivanccs, by which I mean contrivances looking to the accomplishment of the same end, and abundant strength to resist the greatest possible degree of tension, whether proceeding from the expansive force within the bale, orvsud-l den shock or concussion that can be borne by the wire rope or the wire, whilst at the same time it contains or possesses the requisite curved supporting points to prevent all bending of the same to a weakening extent, and so to preserve the whole pristine strength of the wire rope, or wire, as the case may be, entirely unaffected and unimpaircd. But my invention will be better understood by referring to the drawings, in which-'- Figure l is a view of my device when attached to the two ends of a wire-rope band, and Figure 2 a view of the device when detached from such rope. The same letters are used to denote the same parts of the device in both figures.

The hricfest description will be sufficient to explain my invention. It consists of a union of two semiannular grooves or supporting curves, A A', in or around which the ends of the wire rope or wire are fastened by twisting, as is clearly shown at fig. l, so united as to occupy-the smallest space or compass in which it is possible to compress or bring them, as a mere glance at the drawings will completely demonstrate; that is to say, the two curved supports er grooves A A are joined together in such manner that, whilst they are at right angles to each other, and exactly similar in all respects, they overlap one another, and hence occupy butrlittlc more space than would be taken up by one such groeve or support, the device as awhole presenting at thcfsame time the very best form for resisting any strain that can be broughtto bear upon it, the very best for preventing any damaging iiexure or iucurvation of the wire rope or w1rc that may be fastened to it, and as goed as any to be found in any existing, device to simplify or make easy the operation of manufacturing it, or of applying it to actual use. The mode of applying to praetieelis so clearly indicated in the drawings at iig. 1, that no explanation need be herein given on that point. i v i Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

The device herein described, andas shown upon the drawings, when provided with the two overlapping semi-anmllmgrooves-or curved supporting points A A', as described, when constructed as described, and used for fastening the ends of wire rope or of common untwisted wire that is employed for bandingeottombaies, as

set forth.

t JAMES W. BARNUAL Witnesses:

RUFUS R. RHODES, ANDREW HERO.

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