US136620A - Improvement in machines for rolling carriage-axles - Google Patents

Description

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1. c. Ri-GHARDSON. Machines for Rolling Carriage-Axles N0.136,6'2O.

Patented March 11, 1873..

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Patehted March n, 1873,

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- JULIUS c. RICHARDSON, on NEW HAVEN, ooNNEcIIcUr.

IMPROV E MENT IN MACHINES FOR ROLLING CARRIAGE-AXLES/ Specification forming part of Letters PatentNo. 136,620, dated March 11, 1873.

To an whom it may concern: H Be it known that I, JULIUS G. RICHARDSON, of New Haven, in the county of New Haven and State of Connecticut, have invented'an Improved Machine for Rolling Axle-Beds; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawin g makingpart of this specification, in which Figure 1, Plate 1, is a front elevation of the machine. Fig. 2, Plate 1, is a section taken vertically and transversely through the ma chine. Fig. 3, Plate 1, is a view in detail of the two drawing-rolls, showing an axle-bed blank in position for commencing the reducing operation. Figs. 4, Plate 1, shows a top and edge view of alfiuished flattened axle-bed. Fig. 5, Plate 2, shows a blank before it is reduced. Fig. 6, Plate 2, shows a bar when rolled with fins on it. Fig. 7, Plate 2, shows the bar after the fins have been rolled down. Fig. 8, Plate 2, is an enlarged view, showing the peculiar form of groove in the rolls.

Similar letters of reference indicate corresponding parts in the several figures.

The object of this invention is to produce metal axle-beds by means of machinery which I will now proceed to describe.

The following description of my invention will enable others skilled in the art to understand it.

In the accompanying drawing, Plate 1, A A represent two standards, which rise from a base, A, and are connected together at their upper ends by means of a horizontal head-piece, B. These .parts constitute a frame for containing and supporting the operating devices. D D are two reducing and drawing rolls, the journals of which have their bearings in boxes which are applied in vertical slots through the standards A. The journal-boxes of the upper roll are supported on springs s s, and are held down by means of screws t t.. On the upper ends of the screws t t pinions n n are keyed, which engage with wheels at n, which latter engage with a central shaft, N. By these means the upper roll D can be adjusted up and down, and its parallelism with respect to the lower roll D always maintained.v The journals of the two rolls D D extend out from one side of the machine and have keyed on them spur-wheels E E, which engage with each other and cause both rolls to turn with the same speed. The top roll D presents a concentric semicircular workingface, d, the radiuses of which are greater than the radius es of the surface d, as shown in Figs. 2 and 3, which necessarily leaves two shoulders, g 9 diametrically opposite each other. The lower roll D presents a semicircular concentric surface, 0, and an eccentric surface, 0, which leaves an abrupt shoulder at 9 as clearly shown in Figs. 2 and 3. Both rolls present rectangular grooves r, terminating laterally in bevel-surfaces 4", which give to each pair of opposite grooves an octagonal or diamond shape, when viewed as shown in Fig. 4. The ends 17 p of the two rolls present plain surfaces, which, in cross-section of the two rolls, are of the same form as the grooved surfaces are in their cross-section. In front of the rolls D D is a table or rest, 0, which in cross-section presents a convex upper side, as shown in Figs. 2 and 3, for the purpose of preventing the collars on the axle-beds from being arrested by it while drawing them between the rolls. After the collars and axles are formed on the bars,

as shown in Fig. 5, Plate 2, it is necessary to 1 reduce these bars and sometimes to flatten them, as represented in Figs. 4:. To reduce the bars and at the same time have them square in cross-section, l first heat them and then draw them between the rolls D D, commencing with a large groove and continuing with smaller grooves until the bar has been reduced to the proper size. ,If after this it is necessary to flatten the bar with a taper, it is drawn be tween the two plain surfaces 11 p, the upper roll being properly adjusted for this purpose. A bar is adjusted between the rolls D D when the two shoulders g g are in apposition, as shown in Figs. 2 and 3; and as the rolls move around in the direction indicated by the arrow in Fig. 3, the bar will be caught by the grooves in surfaces 01 and 6, close up to its axle-collar,

and the reduction of this bar will commence at said shoulders and terminate at the shoulder g. It will be seen that I am enabled to introduce the bars between the rolls when the two surfaces d and e are opposite each other, and thereby perform the entire work of reducing the rolls from one side of the machine.

As the bars or blanks vary in size, and as it is desirable to have only one machine between the rolls, when the fins s s will be rolled into the bar, and it will be left perfectly square. At the next passage of the bar between still smaller grooves, fins s s are again formed on it, which are subsequently rolled down and the bar left square again. This operation is continued until the bar is reduced to the proper size. Another advantage of forming the thick fins s s on the bars is that they can be rolled into the bars without leaving imperfections at their angles, as would be the case if very thin fins were formed, as between the old rollers. By means of the table 0 the bars can be conveniently guided and supported during their manipulation in the machine. The groovesin the lower roll D extend entirely around it, so that those portions of the grooves which are made into the eccentrio portion of this roll will serve as guides for positively determining into which concentric groove it is intended to introduce a bar, thereby preventing a bar from accidentally getting into the wrong groove while the machine is in operation.

I have described the whole machine represented, in order to illustrate my improx'ement in such machines; but I do not wish to be'understood as claiming the entire machine, nor the invention of introducing the axle-bars at only one side of such machine.

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

1. The upper roll'made with two diameters, one smaller than the other, such roll presentin g a concentricgrooved rolling-surface, d, and a plain concentric surface, 01, and also having shoulders g g, in combination with the lower roller D, which has an eccentric-grooved rollin g-surface and a shoulder, 9 the groove e 6 commencing at the highest point of the shoulder and terminating at the base of the same, substantially in the manner and for the purpose described.

2. Elongated or beveled grooves r-r formed in the rolls, for the purpose of forming fins s s on the bars and rolling down these fins, substantially as described.

JULIUS 0. RICHARDSON.

' Witnesses:

0. B. MATTHEWMAN, A. A. BLAKESLEE.

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