US1216218A - Piston. - Google Patents

Description

A. B. EDDOWES.

' PISTON.

APPLICATION FILED AUG.24, I916.

1,21 6,21 s. Patented Feb. 13,1917.

ARCHIBALD B, nnnowns, or" r'nI Ann PnIA,

LENNSYLVANIA", ASSIQNOR TO THE BALDWIN LOCOMOTIVE WORKSQOF PHILADELPHIA, PENNSYLVANIA, A CORPORAT- 'IION or PENNSYLVANIA,

PISTON.

specification of Letters Patent.

Patented Feb. 13, 191".

Application filed August 24, 1916. Serial No. 116,653.

To all whom it may concern:

Be it known that I, ARCHIBALD B. Ennowns, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certainImprovements in Pistons, of which the following is a specification.

The object of my invention is to securely fasten a bull ring to a piston of a steam or other engine. r

In the accompanying drawing Figure 1, is a transverse sectional view of a piston, illustrating my invention, on the line 11, Fig. 2;

Fig. 2, is a face view of the piston;

Fig. 3, is an enlarged view of a portion of Fig. 1;

Figs. 4, 5 and 6, are views illustrating a modification of the invention; and

Fig. 7, is a View illustrating another modification of the invention.

Referring to the drawing, 1 is the body or the center of the piston, in the present instance made of steel either cast, rolled or forged, and 2 is the bull ring adapted to the periphery of the center and this ring may be made of cast iron, or other suitable material.

On one edge of the center is an ann lar flange 3 shaped to tit an annular recess in the bull ring 2. The opposite edge of the center has a diagonal groove 4 therein and the ring is beveled on a line with the Walls of this groove, as at 5. 6 an annular ri g which is adapted to a recess 4 and res s against the beveled portion of the bull ring forming a flange so that the bull ring is pre vented from moving independently of the center by the fixed flange 3 on one side and the locking ring on the opposite side. The ring is a split ring and is forced in position as illustrated in Fig. 1, and, when in this position, the two ends are welded together. The ring is also preferably welded at 7 {to the center, making a rigid fastenin 'llhe bull ring has the ordinary annular grooves for the packing rings.

I n some instances, I may use the const uction illustrated in Fig. 7, in which the fia; ge- 3" is undercut and is adapted to fit the'undercut portion 8 of the bull ring 2*, while at the'opposite side there is an undercut portion 9 on the bull ring and a ring 6 is adapted to fit in this portion of the bull ring and is extended into an annular groove 4? in the center 1. In order to retain this ring in position, I provide another annular looking ring 6, which is sprung into position. back of the ring 6.

welded to the ring 6" at 7. Either one of the rings (Sfor 6" may be made of a single piece, if found desirable.

In Figs. 4, 5 and 6 is illustrated a further modification in which a ring 6 is used having an.annular tongue 6". The ring is adapted to an annular recess 5 in the bull ring 2, while the tongue is adapted to an annular recess in the center 1, and, when the two parts are assembled, the ring can be forced into position, as in Fig. 4:. I make the abutting ends of this ring. as illustrated in Fig. 6, one beveled end of the ring overlapping the other and one of the ends forms; a recess so that the parts can be Welded, as at 7 In some instances, in addition to the locking ring, one or more pins 10 may be used to retain the two parts in position.

By this construction, I am enabled to firnilvsecure the bull ring to the center, the ring being held on one side by an annular flange formed integral with the center, while at the opposite side an annular flange is formed by the locking ring, which is firmly held in position. No bolts, or other devices, are used which project beyond the piston, making a very compact and simple piston construction.

I olaim:-

l. The combination in a piston, of a center having an annular flange at one edge and having an annular groove at the opposite edge; a bull ring mounted on the piston and having an annular groove alining with the groove in the center; and a locking ring adapted to both grooves. I

2. The combination in a piston, of a center having an annular flange at one edge and having an annular groove at the opposite edge; a.bull ring mounted on the pisten and having an annular groove alining 100 The two ends of the ring are welded together'and the ring 6 is with the groove in the center; a looking to receive the umullr flu of the center ring adapted to both grooves; and means and beveled on {line W1 11 the Inclined for securing he locking ring to the center. groove; and a locking hated to the l0 '3. The combination in a plston, of a oengroove and exten mm 0 beveled 5 ter having an annular flange at one e end portion of the bull ring, curing the bull having a diagonal, annular groove at t e opring firmly to the center. posite edge a. bull ring recessed at one edge ARCHIBALD B. EDDOWEB.

Images