US165541A - Improvement in chain-cables - Google Patents

Description

C. A. CHAMBERLIN.

Chain-Gamm No, 165,541, Patented'luly13, 1'875.

CHARLES A. CHAMBERLIN, OF CAMDEN, NEW JERSEY.

IMPROVEMENT IN' CHAIN-CABLES.

Specification forming part of Letters Patent No. 265,54] dated July 1.3, 11375; application filed March 13, 1875.

To all whom it' may concern:

Be it known that I, CHARLns A. CHAMBER- LIN, of the city and county of Camden and State of N ew Jersey, have invented a new and useful Improvement in Chain-Cables; and I do hereby declare the following to be a clear and eXact description of the nature thereof, sufficient to enable others skilled in the art to which my invention appertains to fully understand, make, and use the same, reference being had to the accompanyin g drawings making part of this specification, in which- Figure l is a side view ofthe bar from which the blank is produced. Fig 2 is a transverse section thereof in line ai fr, Fig. l. Figs. 3 and 4 are side views of the blank from whichthe links of cables are constructed. Fig. 5 is a transverse section in line y y, Fig. 3. Fig. 6 is a transverse section in line z z, Fig. 3. Fig. 7 is a transverse section in line a a, Fig. 3. Fig. S is a view ot' a portion of a chain. Fig. 9 is a longitudinal sectiolLot` one of the links. Figs. l0 and l1 are diagrams, to be hereafter referred to.

Similar letters of reference indicate correspondin g parts in the several gures.

My invention consists in forming the inner faces of the sides of the several links of a chain-cable broader than the usual circular form would give, whereby it is enabled better 'to withstand the tearing process or fracture to which itis subject on said inner faces. It also consists in extending or carrying the broad sides to points at the junction of the sides and bends, and in extending or carrying the bend swells up to or beyond said junction toward the center of the sides, so that there is increased thickness and depth at said points, whereby provision is made to prevent fracture thereat. It also consists in a flexible chaincable, composed of links with flattened bends of greater depth and thickness in the line of strain. It further consists in forming the several links of increased depth and thickness at the points of junction of the sides and bends, and flattened at said points, and of increased depth in the bends in the line of strain. It also consists in forming the inner faces of the sides of the several links broader than the usual circular form would give, and of increased depth and thickness at the points of junction of the sides and bends, and flattened at those points. It also consists in forming the inner faces of the sides of the several links broader than the usual circular form.

would give, and the bends of increased depth and thickness. It also consists of 'a chaincable having the links formed with broad inner sides, increased thickness andvdepth at or about the points of junction of the sides and bends, and increased depth in the longitudinal direction of said bends, Vwhereby the cable is enabled to withstand the several strains to which it is subjected.

Referring to the drawings, A represents a bar, which is rolled in elliptical form, as seen in Fig. 2. rlhe bar A is re-rolled, so as to produce on one of the sides, b, at certain intervals, swells B B, the contour of which, in crosssection y y, is the ligure seen in Fig. 5, but the elliptical form of the remainder is preserved, as shown in Fig. 6, which is a section in line z z, but with the axes reversed. The broad side or face c also extends to the points at or about the junction of the swells and adjacent portions of the bar, so that at said points, as in lines a a, there is an increased thickness of metal. When the bar is bent into shape the swells B occupy position at the ends or bends of the link, said ends or Ybends thus having increased depth longitudinally, as in the line y y, said swells reaching beyond or overlapping the points of junction ot' the sides and bends, so as to give increased depth in the lines a c.

It will be seen that, owing to the elliptical shape of the bar A, said bar, when bent into shape, will present an inner face, c, broader than a circular form would give, whereby the broad side or face c resists the tearing action or fracture to which it is subjected on its inner side, such action or fracture being shown at d, Fig. l0. The tendency to fracture at the points of junction between the sides and bends, as shown at e e, Fig. 1l, is resisted by the increased thickness and depth of the metal in the lines a a and its flattened f0r1n,which lines are near the points at which the fractures e e generally occur. The tendency to fracture on the outside of the bend, say, at f, due to sudden jerks or strain, is resisted by the increased depth and thickness of metal in the line y y.

The depth of the bend .must not be greater than the internal diameter thereof, in order that one link will play freely in another without binding, andthe chain thus possess the requisite flexibility.

In making comparison, I employ as a basis the sides of an ordinary link of round iron of equal area in cross-section.

By depth I mean the direction of the plane of greatest breadth of the link, and by thickness the direction perpendicular to the depth.

I do not claim, broadly, greater depth and thickness in the bends.

Having thus described my invention, what I claim as new, and desire to secure by Let- -ters Patent, is-

1. A chain-cable composed of links having the broad inner faces c c, substantially as `and for the purpose set forth.

2. A chain-cable composed of links with increased depth and thickness at the points of Vjunction of the sides and bends, and flattened at those points, so that the depth will be greater than the thickness, as at a, a, substantially as and for the purpose set forth.

3. A flexible chain-cable composed of links with attened bends of increased depth and thickness in the line of strain, substantially as and for the purpose set forth.

4. A chain-cable composed of links construct* ed with increased depth and thickness at the points ot' junction of the sides and bends, as at a a', and flattened at said points, and iucreased iu depth and thickness in the bends in the line of stra-in, as at y y, said bends be- -ing likewise flattened, substantially as and for `the purpose set forth.

5. A chain-cable, the links of which have side bars with broad inner faces c, and ot' in creased depth and thickness at the points of junction of the sides and bends, as at a a, and flattened at said point-s, substantially as and for the purpose set forth.

6. A chain-cable, the links of which have side bars with broad inner faces c, and hattened bends of increased depth and thickness in the line of strain, as at yy, substantially as and for the purpose set forth.

7. A chain-cable composed wholly or in part of links elliptical on the inner face, as at c, increased in depth and thickness at or about the points of junction of the sides and bends, as at a a, and increased in depth at the bends, as at g/ y, substantially as and for the purpose set forth. u

C. A'. CHAMBERLIN.

Witnesses J oHN A. WIEDERSHEIM, A. P. GRANT.

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