US6683A - And john w - Google Patents

Description

UNITED STATES PATENT OFFICE.

SAMUEL A. COX, OF MALDEN, MASSACHUSETTS, ASSIGNOR TO MATHIAS P. SAWYER, OF BOSTON, MASSACHUSETTS, AND JOHN lV. HALL.

MACHINE FOR BENDING THE LIPS 0F WROUGHT-IRON RAILWAY-CHAIRS.

Specification forming part of Letters Patent No. 6,683, dated August 28, 1849-; Ressued July 14,

T0 all whom t may Concern Be it known that I, SAMUEL A. Cox, of Malden, in the county of Middlesex and State of Massachusetts, have invented a new and useful Machine to be Used in Manufacturing Malleable Metal or VVrought-Iron Railroad-Chairs; and I do hereby declare that the same is fully described and represented in the following specification and accompanying drawings, letters, figures, and references thereof.

Of the said drawings Figure 1, denotes a top view of the said machine. Fig. 2, is a front. elevation of it. Fig. 3, is a central, vertical and longitudinal section of it. Fig. 4, is a central, vertical, and transverse scction of it. Fig. 5, is a side view of a wrought iron chair as made by the said machine. Fig. 6, is a topview, and Fig. 7, is a side view of it, as it appears before being' subjected to the action of the machine; it being rolled into such shape by means of uted or grooved rollers.

In the process of making wrought iron chairs, a bar of metal is first wrought or rolled into the shape of which Fig. 7 would Vrepresent a transverse section; that is to say into the form of a flat plate a, having two lips Z), o, elevated perpendicularly on it. Afterward it is cut up or divided transversely into pieces of the width of the chairs to be made. The peculiar purpose of the machine is to bend these lips from a vertical position into an inclined one, and so that they shall both be perpendicular in part, and either parallel or nearly so, or inclined in part to the Plate a, as seen in Fig. 5.

In Figs. 2, 3, l, A, represents an iron bed block, or anvil for receiving and supporting the chair blank while the lips are being bent down.

B, and C, are two bending arms or levers, each being sup-ported and made to turn on a fulcrum, shaft, or journals, as seen at D, and E. The tail e, of each of the said levers -or arms rests on and over a cam F, which is fixed to a horizontal .shaft G, arranged as seen in Fig. 8. Above the ulcrum of each lever, and situated with respect to the bed or base block A as seen in Figs. 2 and 3 is a projection H, which when the lever is raised up, is brought into contact with the lip b, or c, and bends it down, over, and upon the former I. The said former I,

consists of a bar of steel made to correspond in its transverse ,section to that of the base plate and neck of the rail to be supported in the chair, or in other words to have aI sectional shape agreeing with that denoted at g and L in Fig. 5, as constituting the internal space of the chair for the recept-ion of the rail.

The former I, may be said to be composed of two parts, viz, the base part K, and the neck part Z, the said neck portion being elevated on the other or base port-ion. From one end of the said former a handle m, extends, while from its opposite end there is a projection n, for one arm of a hand lever 7c, to act against, the said hand lever being arranged as seen in Figs. l and 4, and made to turn horizontally .on a fulcrum 0.

Between the projections H, H, and directly over the base A, or the former I, when p-laced on the said base,'is a drop hammer L, which is suitably supported by and so as to play up and down between guides or posts N, N, N, N. This drop hammer may be elevated by any suitable means and suered to drop down upon the lips, so as to ensure their being bent down into close contact with the base of the neck and t-he sides of the former.

The two cam shafts 9, g, should be connected together by gearing or pulleys p, g, and an endless belt or band 7", or other suitable equivalents, and in such manner that their movements may be simultaneous, and so as to elevate both the bending projections at one and the same time.

I do not deem it always essential to use the drop hammer, in connection with the bending levers, but generally prefer to do so on account of easily ensuring a proper formation or bending of the lips of the chair.

In using the said machine, a chair blank, formed as seen in Figs. 6 and 7, is placed on the bed A, as seen at P, in Figs. 2, 3, 4; the former I, being placed on the said blank, so as to be between its lips and on its base; the base of the said former being placed flatly on the base plate of t-he chair. This being effected motion is next given to the cams F, F, and so as to elevate the tails of the bending levers, and thereby cause the projections H, H, to press or bend the lips of the chair, down upon or over, the top surface of the base of the former and against may be forced out of the chair. There is an essential' diiference between my machine and a drop and die, as the bending levers of the said machine p-roduce the lateral bending preparatory to the nal operation of the drop, and do not contact the metal as a drop and die does, and so as to render it Weak or liable to rupture either before or after the operation. By my machine a much stronger and better chair can be made than by the drop and die alone.

A Wrought iron chair made in the -above described manner is entirely new on railroads so far as I have been able to learn. Besides being far more durable or less liable to breakage, than the cast iron chairs it is not attended with the same danger ofbreakage when first laid down; it being Well known that about ten per cent of the cast iron chairs are broken during the process of laying the rails.-

What I claim as my invention isrIhe combination of the former I, the bending levers or bending apparatus, and the base block for supporting the chair blank; the Whole being constructed and made to operate together essentiall in manner and for the purpose herein be ore specified; the drop hammer being employed in combination With the former I, the base block and bending apparatus substantially as described.

In testimony whereof I have hereto set my signature this twenty-ninth day of May,

SAMUEL A. COX. Witnesses:

DANL. CUSHING, JAS. SELDEN.

[FIRST PRINTED 1913.]

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