US99868A - Improved machine for rolling railroad-chairs - Google Patents

Description

' straightened by passing it through DAVID EYNON, OF RICHMOND, VIRGINIA.

Letters Patent No. 99,868, dated February 15, 1870; anteflated February 7, 1870.

IMPROVED MACINE POR. ROLLING- RAILROALDCHAIRS.

The Schedule referredx to in these Letters Patent and making part oi the same To all whom it may concern Be itknown that I, DAVID EYNoN, of Richmond,

in the'county of Henrico, and State of Virginia, have invented a new and useful Improvement in Rolling Apparatus for -I/tolliug Chairs for Railroads; and I do hereby declare that the following is a full, clear, and exact description ofthe same, reference being had to the annexed drawings making part of this specification, in. whieh -Figure 1 represents a plan -view of the apparatus with my improvements attached.'

Figure 2, a front elevation of the same. Figure 3, a vertical transverse sectionv of the same, in which the red outlines indicate lever, stays, and upper additional straightening roller at the 4time when the bar of iron is nearly out of the large rollers. My invention relates to an improvement in rolling apparatus for rolling chairs for railroads; and

It consists in hanging the upper straightening roller in such a manner that it may have a vertical bodily movement, and in providing means by which this roller may be held down to its work during a portion Vof the operation, as hereinafter more fully explained.

lhe following description will enable those skilled in the art to make and use my invention.

A A in the drawings represent the frame, in which are the bearings of the4 grooved rollers B and B its sides are connected by bars, a a, which have at the proper points thevertical danges orstandards b` and b, in which thejournals ofthe additional straightening rollers work.

B and B represent rollers to which motion is imparted in any well-known manner, and which have on their surfaces a selies of grooves and elevations for shaping a heated bar of iron by passing it through lthem successively to a chair for railroads. Y `Ata certain stage of the operation the bar is bent to a concave-convex form, after which its base is again the large rollers andthe additional straightening rollers O and C at the ,same time.

G and C represent the straightening rollers which are arranged in rear of the grooved rollers opposite the proper groove, and have their bearings in the flanges or standards b b.

Heretofore these rollers had a ouiy, and from that fact were had to be set aside. out properly revolving motion Then the iron would not flatten in the atteniug grooves, and many of the chairs would crack at base from end to end, involvingmuch loss. To overcome this dilculty, I propose to hang the upper straightening roller C' in such the positions of the Y practically useless and a manner that it may have also a vertical bodily movement, and slide up when the bar is nearly out of the. large rollers, thus releasing it from all pressure. To this end; I place the journals of this roller C in vertical slots in the standards b l), in such a manner that when it is in its lowest position it is at the proper dis` tance above the lower roller C which has a revolving motion only. The vertical slots in the standards are long enough to allow the necessary movement to the roller C'. 1 Y v D represents asl-lait which has its bearings in the standards b b vertically above the straightening `rol- 1ers; on one of its ends a l|and1evcr, tl, is lirmly securedto it by which it is turned.

E E represent braces which Aare firmly secured t-o the shalt D laying against the inner sides of the standards, and having the form shown in fig. 3of the drawings. They are made of such length that their clawshaped ends will lay on the upper surface of the jour# nals of the. roller C' in its lowest position, holding the latter firmly down when turned down by the hand lever.

The operation is as follows:

The-haud-lever being turned down, as indicated Vby the black outlines in fig. 3 ofthe drawings, brings the claw-shaped ends of the braces down'on the journals l of the upper straightening roller,"holding itlirmly down to its work until the heat-ed har of iron is nearly out of the large grooved rollers, when the hand-lever is thrown up, as indicated hy the red outlines in the same figures, which removes the braces from the journals of the upper roller and allows it to slide up in the slotsof the standards, thus. releasing the bar from all press-v ure, when it may be taken out and again passed through the large grooved rollers until it is .h'uished Having tluis described my invention,

What I claim, and desire to secure by Letters Patent, is-

' 1. In a machine for rolling railroad-chairs, constructed" substantially as described, the combination of the forming rolls B' with the straightening rolls O O when one of the straightening rolls has a vertical bodily movement, as and furthe purpose-set forth.

2. In combination with the straightening rollsl C O', the shaft D, braces E E, and lever al, as and for the purpose set forth.

In testimony whereof, I have signed my name to this speciiicatiou, iu the presence of two subscribing witnesses.

' DAVID EYNON. Witnesses:

JOHN H. BAPTIST, LAWRENCE OUsHINc.

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