US1416232A - Packing gland - Google Patents

Description

A. E. OSBORN.

PACKING GLAND.

APPLICATION FILED JUNE 19, 1920.

Patented May 16,

STATES- PACKING GLAND.

1,&16,232.

Specification of Letters Patent.

Patented May 16, 1922.

Application filed June 19, 1920. Serial No. 390,179.

To all whom it may concern:

Be it known that I, ALDEN E. ,OsBoRN, a citizen of the United States, and a resident of New York city, county and State of New York, have invented certain new and useful Improvements in Packing Glands. of which the following is a specification. I

My present invention relates to packing glands forpumps and the like and the objects of the invention are to provide simple andpractical means for quickly and easily locking the gland in the position to which it is adjusted and which means, furthermore, can be readily unlocked when necessary, as for the purpose of readjusting the packing to take up for wear.

Other objects are to provide a lock of this character, of relatively inexpensive construction and consisting of but few parts, which can be simply and cheaply manufactured.

The invention accordingly resides in the combination of-the adjustable nut of the gland-ambit spring locking ring seated on said nut and projecting through one of a series of openings therein into engagement with a key slot in the pump cylinder or other element with which the gland nut is engaged.

Various other novel features and combinations and arrangements of parts also are in volved'in the invention, as will become apparent from the following specification.

In the drawing accompanying and forming a part of the specification, I have illustrated the invention embodied in one of its most simple and practical forms, but wish it understood that modifications and changes may be made therein without departure from the true spirit and scope of the invention.

In the drawing referred to:

Figure 1 is a longitudinal sectional view of part of a small circulating pump having the invention .applied thereto.

Figure 2 is a cross sectional view through the locking portion of the device, taken on substantially the plane of line 22 of Figure 1.

Figure 3 is a side elevation of these parts.

Figures 4 and 5 are sectional views of a modified form, the latter being taken on line 55 of Fig. I.

The pump cylinder or barrel is designated 5 and the reciprocating piston which operates therein is indicated at 6.

The pump barrel is. screw-threaded at its outer end at 7 to receive the gland nut 8 and the locking ring 12.

is furthermore slotted as at 9 to receive the point of the locking ring.

- The gland nut is formed with a circumferential series of openings 10 therein and with a peripheral groove 11 connecting said openings and forming an annular seat for locking lug from the key slot. The opposite end of the locking ring is also shown as bent outwardly as at 15, to form a handle for use in the placing or removal of the ring. v

The packing, which may be of any suitable compressible material, is indicated at 16 in Figure 1, and the'same is shown as acted on by a gland ring 17 slidingly engaged in the end of the pump barrel and having a shouldered engagement at 18 with the surrounding outer end portion of the gland nut.

IV hen the parts are first assembled, the gland nut is turned up far enough to bring the packing under proper compression and then the locking ring is sprung into position on the gland nut in such relation as to bring the locking lug on the end thereof into engagement with the key slot in the pump barrel, it being extended for this purpose through the hole 10 in the gland nut, which is then in registry with said slot. In this position the locking ring provides a secure means for holding the gland in its tightened condition. but at the same time the nut may be easily loosened or tightened upon lifting the end of the locking ring outof engagement with the key slot. hen the new ad justment is made, the locking end of the ring will be entered through the hole in the gland nut which is then in registry with the key slot and the parts will then be again locked in their adjusted relation.

The spring locking ring forms in effect a part of the gland nut and does not project materially therefrom, so that it does not interfere with free access to the gland or to any of the pump parts. The device as 7 a whole is relatively simple and quite inexpensive and can be cheapl produced. It will be noted that the holes in the gland nut are somewhat wider than the key slot in the pump barrel. This is to permit a little leeway one way or the other for the adjustment of the gland nut, permitting the gland nut to be turned up regardless of the question of the registry of the holes therein with the key slot, it only being necessary when the adjustment is finally reached to determine that enough of one of the holes in the gland nut is in registry with the key slot tov permit the passage of the end of the'locking ring into engagement with the key slot.

The locking ring, it will be seen, may simp? be constructed of spring wire bent into he form of an open ring having the general shape illustrated and this ring, when applied to the gland nut, forms actually a part of the nut-and entirely eliminates the need for a lock nut and the more or less clumsy fastenings which have been necessary heretofore for securing the gland nut in its adjusted relation.

In Figures 4 and 5 I have shown the gland nut 8 as constructed of sheet metal internally threaded to fit the threaded portion 7 of the supporting structure 5. In this case the annular seat for the locking ring 12 is provided by turning the inner end of the nut out at an angle to form a flange 20 and said flange and the seat portion of tlie nut are slotted. as indicated. to provide the holes 10 for the passage of the locking lug 13 into engagement in the key-Way 9. This construction is quite inexpensive and serves well for certain classes of work.

The slots which form the holes 10 may be cut in the end portion of the nut before the flange 20 is struck outwardly. These segments of the out-turned flange provide lugs with spaces between them for the reception of a spanner wrench or a like tool for turning up the nut.

While my invention is shown in the different figures as applied to pump plunger glands it is obvious that it can be used to equal advantage at the stuffing boxes-of any rotary pump or shaft or valve spindle or expansion pipe joint or other place where a locked type of nut is desirable.

hat I claim is:

In a packing gland, the combination with a pump barrel, or the like. having an exteriorly screw threaded end portion, provided with an intersecting keyway, and an interiorly threaded gland nut, engaged over the screw threaded end portion of the pump barrel, or the like. said gland nut having an annular positioning shoulder and a plurality of peripheral openings adjacent said shoulder. and a spring locking ring engaged about the gland nut, over said open ings and positioned thereon by engagement with the annular shoulder, said spring ring having an angularly inturned lug to project through a selected one of the peripheral openings into engagement with the keyway aforesaid.

In witness whereof, I have hereunto set my hand this 11th d2 of June, 1920.

AL EN E. OSBORN.

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