US663748A

US663748A - Shafting.

Info

Publication number: US663748A
Application number: US771200A
Authority: US
Inventors: Joseph Giroux
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-03-07
Filing date: 1900-03-07
Publication date: 1900-12-11
Anticipated expiration: 1917-12-11

Description

Patented Dec. ll, I900. J. GIROUX.

SHAFTING.

('Applicatian filed Mar. '7, 1909.)

(No Model.)

[/V VENTOR Attarney UNITED STATES PATENT OFFICE.

JOSEPH GIROUX, OF NEW YORK, N. Y.

SHAFTENG.

SPECIFICATION forming part of Letters Patent No. 663,748, dated De ember 11, 1900.

Application filed March 7, 1900.

To all 21/77/0177, it may concern.-

Be it known that I, JOSEPH GIROUX, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Shafting, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to shafting for heavy machinery.

The object of the invention is to produce a shaft which shall be strong and relatively light, and which can be ventilated or cooled with ease.

Figure l is an elevation of such a shaft ap plied as a railway-axle. Fig. 2 is a cross-section of the shaft, and Fig. 3 a broken side elevation of a shaft. Fig. 4 is a perspective of one of the segments which go to make up the shaft proper. Fig. 5 is a perspective of the sleeve orjacket of the shaft. Fig. 6 is a broken perspective of the plate from which the sleeve is made. Fig. '7 is a perspective, and Fig. 8 a sectional View of a modification.

A indicates a segment of a tube, preferably of rolled iron or steel. Such a segment can by repeated rollings be made to have a high degree of tensile strength. My preference is to have each segment rolled as a third of a tube, although the number of segments may vary. The edgesa a can be planed to an exact finish should there be any imperfection or inequality in the rolling, and such work can be done at small cost. The metal will be rolled so that the fiber extends lengthwise of the segments. \Vhen the edges of segments A are smooth, a butt-weld may unite such edges to form a tube. As shown in Figs. 7 and 8, the sections A may have tongue-andgrooved edges. /Vhen such are joined and welded together, a lap-weld results.

The cover or sleeve B may be a similar or different grade of metal from that of segment A. This sleeve will be rolled as a fiat plate 13, the direction of rolling being such as to extend the fiber of the metal crosswise or widthwise of the plate, as indicated by the double arrow in Fig. 6. The edges 17 b of this plate may be planed or dressed to the proper .lerial N0. 7,712. (No model.=

form, so that the plate B will roll into a tube 13 with a single joint, which is to become a welded joint.

The tube-section A A A when assembled form a tube. This is inclosed in the tube 13 and the whole heated and the joints welded,-

either under a heavy hammer, if the shaft be of large diameter, or by rolling, when small shafts are constructed. The modifications shown should make it clear that the welded joints may be of any of the usual forms for welded joints. The welds having been made, as indicated, the shaft is completed in usual manner. As the shaft is hollow, a current of water may pass through it. In steamships the rear end of the shaft maybe left open, and by simple means a water circulation through the shaft may be maintained. In axles and line-shafts the open ends of the shaft will permit air circulation within the shaft if suitable couplings be used. Such circulation of air or water will tend to prevent hot bearings and will secure a gradual cooling from within.

Should it be necessary to cutaway a part of the shaft to form bearings, as at C, it is advisable to out less than the thickness of the outside sleeve portion B, as the arrangement of the metal in said portion is better for a bearing than is that of sections A.

The finished shafting consists of an integral tube of metal having a hollow central portion composed of segments welded to each other, the fiber of metal in said central portion extending lengthwise of the shaft and an outer layerof metal with the grain or fiber extending circ umferentially, all being welded into a single permanent shaft.

Of course itwill be understood that shafting so constructed is adapted for use as piston or pitman rods or for other uses connected with machinery.

What I claim is 1. A shaft for machinery consisting of a tube of metal having that portion next the central opening with the grain or fiber extending in longitudinal direction, and an inclosing layer of metal having its grain or fiber extending in generally circumferential direction, substantially as described.

2. A hollow shaft having its central section tube having its fibers running circumferencolnposed of segments of a tube with welded tially, substantially described. 10 edges, and an inclosing tube having its edges In testimony whereof I affix my signzttu re joined bya \veld, all being Weldedinto a single in presence of two Witnesses. 5 structure, substantially as described. JOSEPH GIROUX.

3. A hollow shaft having its interior por- Witnesses: tion composed of segments lap-Welded to- W. A. BARTLETT, gether, and its exterior composed of a Welded CHAS. K. DAVIES.