US272819A - John w - Google Patents

Description

(No4 Model.)

J. W.VWILBRAHAM.

STUPFING BOX FOR JOURNALS.

No. 272,819. Patented Feb.20,1883.

. w l .m v Y UNTeD STATES PATENT OFFICE.

HIMSELF, AND THOMAS WILBRAHAM AND JAMES WILBRAHAM, BOTH oF SAME PLACE.

STUFFING-BOX FOR JOURNALS.

SPECIFICATION forming part of Letters Patent No. 272,819, dated February 20, 1883. Application filed December 15. 1882. (No model.)

. tion,

The object of my invention is to so construct a stung-box for rotating shafts that a tight 1o joint can be secured with less pressure on the follower than in a stufling-box constructed in the ordinary manner, waste of packing being also prevented.

In the accompanying drawings, Figure 1 is a longitudinal section of parts of the ends-of a cylinder or drum containinga shaft, the journals of which have to be packed; Fig. 2, an enlarged section of one of the journals, and Figs. 3, 4, and 5 views illustrating modilications of my invention.

A A represent. parts of the ends of a cylinder or drum, and B a shaft intended to rotate therein, the journals a of this shaft being adapted to stutlng-boxes comprising the usual glands,D,followers E,and bolts for setting up the latter. Ordinarily the pacliiiigwis conned between the inner end of the follower and an nteriial shoulder in the gland D. the packing being compressed longitudinally between the shoulder and the follower, and expanded radially so as to bind on the journal of theshaft. lfind thatthejournalsof sliafis which`liave only a rotating movement can be packed more effectively by discarding this plan and foi ming a shoulder on the journal itself, against which shoulder the packing is forced by the follower. Thus, in Figs. l and 2 l have shown a gland, D, having a uniform bore throughout, the outer portion of thejonrnal being adapted to the opening in the follower E, but its inner end having a shoulder, b, so as to tit snugly to the bore of the gland. When pressure is exerted upon the packing :c by the follower, said packing is forced against the shoulder b, and a tight joint is insured With inuch less pressure onthefollowerthnnin anordinarystnfiingbox. Thefaceottheshoulder b is preferably recessed, so as to increase the surface of the same and present an indi- 5o rect coni-se for leakage, and that portion d of the journal adjacent to the shoulder b is ta.-

. pered, so as to present a still more extended surface against which the packing is pressed when the follower is forced into the gland. In some cases the shoulder may consist wholly of such a tapered portion of the journal, assliown in Fig. 3, or a plain sshoulder on a cylindrical journal may be used, as shown in Fig. 4, the only thing essential to the invention being a. shoulder ou the journal, against which the packing is pressed by the follower.

In carrying out my invention I have in soiiie case combined a shouldered journal with a gland having an internal shoulder-such, for instance, as that shown in Fig. 5; but while this construction attains in some measure the advantages due to my invention, it is inferior to the plans shown in Figs. 1 to 4, in which the shoulder is formed Wholly on the journal, and the latter construction is preferred.

Although I have referred to rotating shafts, my invention is equally applicable to shafts having a movement of partial rotation.

Besides securing a tight joint with alight pressure on the follower, I am enabled Io save packing,as there is less wear on the latter than in an ordinary box, and the follower can be set up until all of the packing is exhausted, thc usual waste being prevented.

I claim as my invention- 1. The combination of the gland and follower of a smiling-box with ajournal having a shoiilder against which the follower.

2. The com hination ofthe gland and follower of a stufliigbox with a journal having a rccessed shoulder, against which the packing is forced by the follower.

3. The combination ofthe glandand follower of a stuffing-box with ajournal havingashoulder,b,aiid a tapered portion, d, adjacent thereto, against which the packing is forced by the follower.

In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses.

JOHN W. WILBRAHAM.

Witnesses HARRY DRURY, HARRY Saura.

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