US274964A - Machine for rolling metal bars - Google Patents

Description

(No Model.) Q Sheets-Sheet l.

J. OSTRANDER. MACHINE FOR ROLLING METAL BARS.

No; 274,964. Patented Apr. 3,1883.

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J. OS TRA NDER. MACHINE FOR ROLLING METAL BARS.

(No Model.)

Patented Apr. 3,1883,

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J. OSTRANDER. MAGHINHFOR ROLLING METAL. BARS.

No. 274,964. Patented Apr. 3, 1883,.

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' J. OST'RANDER. MACHINE FOR ROLLING METAL BARS.

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To all whom it may concern UNITED STATES PATENT FFICE.

JONATHAN OSTRANDER, OF CLEVELAND, OHIO.

MACHINE FOR ROLLING METAL BARS.

SPECIFICATION forming part of Letters Patent No. 274,964, dated April 3, 1883.

Application filed February 11, 1882.

Be it known that I, JONATHAN OSTRANDER, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Machines for Rolling Metal Bars; and I do hereby declare the following to be a full, clear, and exact description ot'the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to machines for rolling metal bars, tubes, and the like; and it consists in the peculiar construction ofthe same, as will be hereinafter fully set forth and claimed.

In the drawings, Figure 1 is a plan view of a machine constructed according to my invention. Fig. 2 is a front end view of the same. Fig. 3 is an end elevation, partly in section, showing more clearly the internal construction of my machine. Fig. 4 is an enlarged detached view, showing the construction and arrangement of guides used in connection with and forming part of my machine. Fig. 5 is a view of my improved mandrel which I prefer to use in rolling hollow bars or tubes. -Fig. 6 is a view showing one manner of forming an ingot or pile to be used for rolling hollow bars. Fig. 7 is a diagram showing the manner of grooving the several rolls when it is desired to roll hexagon bars.

A A A are a series of vertical rolls adjustably journaled in a frame of suitable construction, and driven by means of gear-wheels B B B, which in turn are secured to and driven.

by the shaft 0. y A

D D I) are a series of horizontal rolls, which alternate with the vertical rolls A A A These rolls D D D are also driven by means of gearwheels E E E which are secured to and driven by the shaft F. These rolls A A A are set at an angle of ninety degrees to the rolls 1) D D G are a series of guides, each of which is (N0 model.)

tour of the rolls preceding it, which allows the bar, as it leaves said rolls, to pass between the jaws and be guided to the next pair of rolls. The forward ends of the guides G are held apart by means of weights 1) or springs, or in any other suitable manner. (See Fig. 4.) The object in holding the forward ends open or apart is to allow the bar, as it leaves the roll, to easily enter between the jaws of the guides, and when the bar has passed to the rear end of the guide it forces said end outward, which in turn acts to close the forward end and cause the guides to hug the bar and guide it This arrangement is particularly valuable in rolling hollow bars for nut-blanks and the like, as it keeps the mandrel in the center of the bar and prevents the bar from being rolled thinner on one side than the other.

H is a rest, which acts to support the ingot or the hot pile before it enters the rolls. This rest is directly opposite the-grooves ot' the first rolls A.

Between the rest Hand the rolls A is a sliding forked retainer or check, I, which is operated by means of a lever, as shown, or in any other suitable manner. The function of this retainer or check is to keep the hollow ingot or pile from entering between the rolls A while the mandrelis beingpassed throughit,and after themandrel is secured in the desired position the check may be removed in any suitable manner, and thus allow of the entering of the ingot or pile between the rolls A.

J is my mandrel, which is constructed, as shown more clearly in Fig. 5, in hollow sections screwed into each other, each section being of less diameter than the section preceding it. By forming my mandrel hollow, as above described, water may be passed through it and keep it cool.

Kis an adj listing-nut, which runs on a thread, a, cut on the end of the mandrel. The nut K rests against a support, L, said support acting to hold the end ofthe mandrel up, and also, by means of the nut K impinging against it, prevent the mandrel from being drawn in through the rolls. The ingots or piles are preferably formed, as shown in Fig. 6, for hollow bars. The contour of the grooves of the rolls for rolling hexagon bars is shown in Fig. 7.

The operation of my machine is as follows:

- bar, and also to elongate said bar.

For rolling hollow hexagon bars, a hollow ingot or pile, substantially as shown in Fig. 6, is employed. This ingot or pile, after being heated, is placed in the rest H, and the retainer I is raised by means of a lever, or in any other suitable manner, which prevents the ingot from entering between the rolls A. The mandrel J is now passed through the ingot, and from thence through to the last rolls, D the guides G acting to keep said mandrel from being caught between any of the rolls. The mandrel J is now adjusted so that the shoulder or end of each section shall reach just past the center of the roll, and held there by means of the adj ustingnut K, which rests against the support L. The check or retainer I is now lowered, and the ingot is allowed to pass between the rolls A, and from thence to and between the rolls D, and so on to the last pair of rolls, D each pair of rolls acting to reduce the diameter of the interior and exterior of the Each succeeding pair of rolls is made to run somewhat faster than the pair preceding it. This is done to allow for the elongating of the bar, which would otherwise buckle or drag. This is accomplishedinany suitable manner, and may be done by means of the gear-wheels B B B and E E E 1. In a machine for rolling metal bars, the

combination, with a series of vertical and horizontal rolls alternating with each other and arrangedindependently of each other and each successive pair of rolls being driven faster than the pair preceding, of the sectional pivoted guides, substantially as set forth.

2. In a machine for rolling metal bars, a mandrel formed of sections screwed together, substantially as set forth.

3. In a machine for rolling metal bars, the combination, with a series of rolls, arranged substantially as described, of guides formed of pivoted sections reaching from one pair of rolls to the next following pair, and provided with weights, substantiallyeas set forth.

In testimony whereoflhavesigned my name to thisspecitication in the presence of two subscribing witnesses.

JONATHAN OSTRANDER.

Witnesses:

J NO. ORG-WELL, J r., ERNEST O. ORSBURN.

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