US894537A - Metallic packing. - Google Patents

Description

e. D. ROLLINS. METALLIC PAOKINGI APPLIGATION I'ILEDOGT.12. 1907.

WITNESSES {NVENTOR ATTORNEY PATENTED JULY 28, 1908.

GEORGE D. ROLLINS, OF PHILADELPHIA, PENNSYLVANIA.

METALLIC PACKING.

Specification of Letters Patent.

Patented July 28, 1908.

Application filed October 12, 1907. Serial N 0. 397,124.

To all whom it may concern:

Be it known that I, GEORGE D. RoLLiNs, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a certain new and useful Improvement in Metallic Packing, of which the following is a specification.

My invention relates to a new and useful improvement in metallic packing, and has for its object to so construct such a packing that it will be especially adapted for the piston and valve rods of locomotives and the ike and provide for the application of the packing to the cylinder or steam-chest of a locomotive, the split casing being entirely inclosed within an outer casing, and further to thoroughly oil the piston or valve rod and prevent the passage of dust or grit to the rings of the packingv With these ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertams may understand how to make and use the same, I will describe its construction in detail, referring by letter to the accompanying drawing forming a part of this specification, in which- Figure 1 is a section of my improved packing. Fig. 2, an end view thereof looking outward, showing it applied to a cylinder or steam chest.

In carrying out my invention as here embodied, A represents the inner casing, which is made in two sections and secured together by suitable screws, and this casing has grooves formed therein for the reception of the packing rings B and also for the supporting or guiding ring 0.

D represents the outer casing which is made in two sections and secured together by the screws E, and this outer casing has formed therewith an elongated head or flange D, through which the holes F pass for the reception of the stud bolts G, by which the outer casing is secured in place against the face of the cylinder orsteam chest, indicated at H.

The object in making both the inner and outer casing in sections is to facilitate placing them in position around the piston 01 valve stem rod indicated at I and avoiding the necessity of having to disconnect these rods from their cross-heads for this purpose, which would otherwise be necessary if either or both of the cases were made in one piece.

In the front face of the outer casing is formed a recess, and in this recess is located the two washer disks K, through each of which passes the rod I with a running fit, and between these two disks is located a fibrous packing L, such as waste or the like, and these disks and packing are held in place by a plate M, which is let in flush with the outer face of the casing and held in place by suitable screws. A suitable oil cup the shank of Which is indicated at N leads to the fibrous packing L, thus'aflording means f lubricating the valve in its to and fro movements and excluding dust or grit from the packing rings 3.

From the foregoing description it will be seen that my pac ing may be readily applied to a piston or valve rod by simply removing the ordinary stufling boX, placing the inner casing around the rod, securing its sections toget er and then inclosing this inner casing with the outer casing, and in turn securing the sections of the latter together, and finallyforcing the outer casing tightly against theface of the steam chest or cylinder by screwing up the nuts on the stud bolts G. Any suitable packing may be used between the meeting edges of the outer and inner casidng and the face of the steam chest or cylin- While I have described a split inner and outer casing, it is obvious that these casings may be made without being split.

Having thus fully described my invention, what I claim as new and useful, is

1. A metallic packing for locomotives and the like consisting of a split casing having recesses formed therein for the reception of packing rings, and an outer split casing adapted to fit around and inclose the inner casing and hold the same in place and pack it against the escape of steam, as specified.

2. In a metallic packing, the combination of an inner split casing having recesses formed therein for the reception of packing rings, an outer casing also made in two sections, said sections being secured together around the inner casing, a flange formed with the outer casing and stud bolts passed through holes in said flange for securing the outer casing in place.

3. Ametallic packing for locomotives and In testimony whereof, I have hereunto the like conslstlng of a caslng having reaffiXed my signature 1n the presence of two cesses formed therein for the reception of subscribing Witnesses.

' packing rings and an outer casing adapted to GEORGE D. ROLLINS. 5 fit around and inclose the inner casing and Witnesses:

hold the same in place and pack it against S. M. GALLAGHER,

the escape of steam, as specified. E. N. SOHQFIELD.

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