US505405A

US505405A - lauth

Info

Publication number: US505405A
Authority: US
Publication date: 1893-09-19
Anticipated expiration: 1910-09-19

Description

(No Model.)

JJN. LA-UTH. METHOD OF TREATING GAR AXLES.

N0. 505,405. Patented Sept. 19, 189B.

UNITED STATES PATENT OFFICE.

JOHN N. LAUTI-I, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TO JAMES GREEN OF SAME PLACE.

METHOD OF TREATlNGICAR-AXLES.

iPECIFIGATION forming part of Letters Patent No. 505,405, dated September 19, 1893.

Application filed January 12, 1892- Serial No. 417,839. (No specimens.)

To all whom it may concern:

Be it known that 1, JOHN N. LAUTH, of the city of St. Louis, in the State of Missouri, have invented a certain new-and useful Improvement in Methods of Treating Car-Axles, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

Oar axles are made by placing them upon an anvil, beneath a heavy hammer, by which they are pounded into shape while hot. During the hammering process, the axles become surface chilled, or what is called hammer hardened, and it has been the practice to place the axles, as they come from the hammer, upon a table where they are allowed to cool 0%, out of contact with each other.

When put in use it has been found that the hammer chilling of the axles sometimes causes them to snap or break, and I have discovered that by piling the axles together, as they come from the hammer, their outer surfaces will be annealed, the heat of the interior ones of the bunch or pile passing off by conduction or radiation, through the surrounding ones, the cooling of the axles thereby being rendered more gradual, without the use of special apparatus, and without the use of extra manipulation. My invention, therefore, relates to a method of annealing car axles, and consists in features of novelty pointed out in the claim.

In the accompanying drawings Ihaveshown three ways, either one of which, among others, might be followed in carrying out my method, and by describing these drawings my method will be fully disclosed.

Figure I is a side elevation of a number of car axles piled together; and Fig. II is an end view of same. Fig. III shows a number of axles inclosed by a hood, which is shown in section; and Fig. IV shows a bunch of axles inclosed by a box.

Referring to the drawings, 1 represents the car axles. These may ei her be bunched, as shown in Figs. I and II, without any covering, and in this case the annealing effect is produced by the heat of the interior ones passing off by conduction, or radiation through the surrounding ones. I have found this method quite desirable and effective, but if preferred, the axles may be inclosed bya hood 2, as shown in Fig. III, or may be placed in a box 3, as shown in Fig. IV. In neither case, however, is any heat required other than that contained in the axles, as they come from the hammer, so that the expense of carrying out my method is practically nominal, while practice has demonstrated that the quality of the axles is greatly improved.

I claim as my invention The process of treating and annealing car axles herein described, which consists in first heating them, next shaping them by swag'ing or hammering in customary manner and then bunching them together in close contact whereby the heat contained in theinner axles is slowly radiated through the surrounding axles with which they are in contact and the whole are cooled gradually and annealed and the hammer chill of the surfaces is eliminated, all as herein explained.

JOHN N. LAUTH.

In presence of- E. S. KNIGHT,

A. M. EBERSOLE.