US13313A - James kelren - Google Patents

Description

UNITED STATES PATENT OFFICE.

JAMES KELREN, OF CANTON, MASSACHUSETTS, ASSIGNOR TO IIIMSELF AND GEO. BANKS.

MACHINE FOR MAKING RAILWAY-CHAIRS.

Specification of Letters Patent No. 13,313, dated July 24, 1855.

' of Massachusetts, have invented an Improved Machine to be Used for Making WYrought-Metal Chairs for Railway-Cars; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, letters, figures, and references thereof.

Of said drawings Figure 1, denotes a top view of the said machine; Fig. 2, is a front elevation of it; Fig. 3, is a vertical and longitudinal section of it, the same being taken through the bending dies and their toggles; Fig. t, is a central, vert-ical and 'transverse section of the machine; Fig. 5,

is a side view of a wrought iron chair of the kind made by such machine; Fig. 6, is a top view of it; Fig. 7, is a side view of it as it appears before being subjec-ted to the action of the machine, it being rolled into such shape by means of fluted or grooved rollers.

In the process of making wrought iron chairs, a bar of metal is first rolled into the shape of which Fig. 7, exhibits a side view, that is t0 say, into the form of a flat plate, a, having two lips, Z), c, elevated perpendicularly on it.

The peculiar purpose of the machine of which my invention forms a part is not only to bend each of these lips from a vertical position down into that exhibited in Fig. 5, but to punch or form the holes, through which the spikes are passed for fastening the chair to a wooden sleeper.

In Figs. 3, and 4, of the drawings above mentioned A, represents a movable metallic bed, block, or anvil for receiving the chair blank and supporting itl while its lips are being bent down upon a former, B, which is attached to the carriage or bed and projects over the same as seen in the said figures. The said anvil or block, A, slides transversely upon the bed plate C, of the machine and when in position to receive a chair blank extends over an opening or passage D, made downward through said base plate. said anvil or carriage A, the chair (which is shown in Figs. 2, 3, and t, by red lines) will be drawn against the inner surface of one 0f two horizontal or parallel rails E, E, and discharged from the carriage and its During the backward movement of former B, and by gravity will be caused to fall out of the machine and through the hole D.

F, F, are the bending dies or blocks, they being arranged and made to slide either toward or away from one another between two rails E, E. Each of the dies has a set of toggles or progressive levers Gr G, connecting it with the adjacent part, I'I, of the frame work and with a pitman or connecting rod T, jointed to and depending from a movable cross head or bar K. A reciprocating, rectilinear movement is imparted to such cross head by a connecting rod, L, and a crank pin, M, arranged and applied together to the cross head and a gear, N, as seen in the drawings, such. gear being rotated by a pinion, O, carried by a driving shaft P. The shaft, Q, of the gear, N, has a crank, R, which works in the horizontal groove, d, of the head, e, of a vertical slide, S, arranged and applied to the frame as seen in Figs. l, and ll. A bent lever T, disposed below the slide is connected both to it and the carriage or bed A, by means of connecting rods, iz., z'.

The crank R, simply elevates the slide S, while the said crank is rising through the upper semicircle or half of its rotary movement, the crank passing and remaining entirely out of the groove of the T piece, during the time it is making the lower half of its path of rotation. hile the slide, S, is being elevated, the anvil or carriage, A, with its former, B, will not only be drawn backward, but the bending dies, F, F, will be moved away or apart from one another. The return movement of the carriage and benders is effected by the rod, S, and is arrested a short time before the bending dies are moved into contact, such time being sutlicient to enable a chair blank to be placed upon the bed and directly underneath the former, B, as seen in Fig. 2. The bed having been so applied with a chair blank, the dies during their further approach will be pressed against the lips of the blank and will force and turn them down upon the said former. Immediately after this has taken place, machinery to be hereinafter described is put in operation so as to punch the spike holes through the chair. l

Each of the bending dies F, F, carries one or more punches, U. `Each of said punches works or slides vertically through the die, and when in its highest position is supported on a helical spring 7c, the head, Z, of the punch resting on the spring as seen in Fig. 4. Above each of the punches is a driver or depressor, V, which is fastened to and extends from the cross head, K, and carries upon a fulcrum or arm, m, (extended from it as seen in Fig. 4) a horizontal lever or lifter, 7, a top view of-which is given in F ig. 8. The longer arm of said lifter is borne toward an upright or stationary cam, X, by means of a spring, a, Such cam is so formed as not only to allow the lifter to pass under the head of its punch, while the punch is being driven downward, but to enable it (the said lifter) to elevate the punch out of the chair during a part of the ascent of the lifter. The cam is also so made as to discharge the lifter from its hold on the punch, after the latter has been sufficiently elevated. The object of the spring of each punch is notto elevate the punch, but sim- I do not claim the combination of bending 30 dies a bed and former, but

IV hat I claim is* Combining with each of the punches and its driver a lifter and mechanism for operating such lifter as specified, such punch being applied to the bending die and supported on a spring as explained.

In testimony whereof I have hereunto set my signature this sixteenth day of May,

JAMES KELREN. IVitnesses R. H. EDDY, F. P.' HALE, Jr.

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