US124833A - Improvement in the process of making hollow metallic axles - Google Patents

Description

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" WlLLlAM A. LEWIS. Improvement in the Process of Making Hollow Metallic Axles. NO 124833. Patented Marehl9,l872.

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-WILLIAM ARNOLD LEWIs, OIr CHICAGO, ILLINOIS, AssIGNOn 'ro HOLLOW AXLE MANUFACTURING COMPANY,77 OF MISHAWAKA, INDIANA.

IMPROVEMENT IN THE PROCESS OF MAKING HOLLOW METALLIC AXLES.

Specification forming part of Letters ,Patent No. 124,833, datedMarch 19, 1872.

Specication describing an Improved`-Process for the Manufacture of Hollow Metallic Axles, invented by WILLIAM ARNOLD LEWIS, of Chicago, in the State of Illinois.

This invention is especially adapted for the production of hollowr axles of large size. The process is as follows: Plates or heavy sheets of wrought-iron or steel are rolled with parallel sides and of proper dimensions to allow of cutting from each of said plates one or more blanks, which may be afterwards bent into the In the act of rolling the aforesaid plates the proper increase of thickness may be imparted at points where the journals are to be made. The plates having been thus rolled, are next cut into lengths for axles, and then stamped out into proper outline, so that when bent into concavo-convex or segmental form they may be Welded together in pairsto make complete axles.

In the accompanying drawing, Figure 1 is a side or edge view of a plate or bar adapted for the production of three lengths of axlesection blanks. Fig. 2 is a top view of the same. Fig. 3 is a front elevation of portions of a pair Of rolls adapted for the rolling of a bar, such as shown in Figs. 1 and 2. Fig. 4 is a transverse section of the same at a: Fig. 3. Fig. 5 is a plan on a larger scale of a single length cut forone axle-section blank. Fig. 6 is a side or edge view thereof. Fig. 7 is a plan of a flat blank cut, in readiness for bonding into an axle-section. Fig. 8 is an edge view of the same. Fig. 9 is avertical section of parts of the cutting apparatus employed to produce a flat blank, such as shown in Fig. 7, from a bar, .such as shown in Fig. 5. Fig. 10 is a plan of a blank swaged into concaVo-convex form preparatory to being Welded to another of corresponding form to make a complete hollow axle. Fig. 11 is a .transverse section at y y, Fig. l0. Fig. 12 is a vertical sectional view of a pair of swaging-dies and their accessories, which may be employed to form the blank shown in Figs. 10 and l1. Fig. 13 is a horizontal section of theA same, showing a plan of the lower die. Fig. 14 is a sectional View of a part of the furnace, and of the dies by means of which the axle-sections are welded together in pairs. Fig. 15 is an elevation of a finished axle. Y

. therolls B B.

General Description.

A represents a bar, produced of any desired length and width by passing between The bar A may be made of uniform Width and of unequal thickness, a a, a being thick portions where the arms or journals are to be'formed. These inequalities in thickness are produced by the varying depth of the groove b in one or both of the rolls, as illustrated in Figs. 3 and 4. The bar shown in Figs. 1 and 2 is adapted for the production of three axle-sections. It is severed at the thickest parts a a a, and each of these separate pieces is then cut into a blank of proper shape, as illustrated in Fig. 7. This cutting is performed by a shear or punch, such as shown in Fig. 9, or by other appropriate mechanism. By such means the severing and shaping of the blanks may be performed at one operation, either from bars of single width, as illustrated in Figs. 2 and 5, or from extended sheets, from the width of which a number of blanks may be cut. In Figs. 7 and 8,1 1 represent the portions which are to form the axle-arms or journals; 2 2,`the projecting parts, which are to constitute the collars; 3 3, the extremities, on which are to be cutthe screw-threads to receive the nuts; and 4 5, upward enlargements, which impart great strength to the axle, and take .the place of the Wooden stock used with axles of common form. The recesses to receive the hounds may be formed iu the projections 4 4; and that to receive the reach or perch in the centra-l projections V5, either in the first cut-Y ting of the blank, or entirely during the nalwelding and swaging process. The flat blanks thus formed are next bent into halfoval form with flat edges, substantially as shown in Figs. 10 and l1. This may be effected by heating the at blank in any suitable furnace-such, for example, as that shown in Fig. l-and then placing them between dies, Fig. l2, which dies being actuated by levers or by a drop instantly impart to the blank the shape shown in Figs. 10 and 11. A pairvof such blanks, secured face to face, are then placed within the furnace F, and, without being removed from the heat of the said furnace, are placed between welding and swaging dies D, which are so formed as to impart the proper contour to the nished axle. Axles of large size are made of elliptical cross-sec' tion to impart greater vertical strength.

My invention in this case is not e Wholly nenr process ofmeking hollow metallic a-Xles, but is zin improvement on the processes heretofore practiced, the improvement being the rolling of the plate to irregular thicknesses; the cutting of the sections from scid plate; an d the swagng of those sections in dies, all as described end shown; the subsequent operation required to complete the axle being the sinne Witnesses R. C. AVERY, WM. H. D. BARR.

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