US873507A - Metallic packing. - Google Patents

Description

No. 873,507. v v PATENTED DEG.10,1907.

B. M. 000K.

METALLIC PACKING.

APPLICATION FILED MAY 29. 1907.

219i 1'" uses EDWARD M. COOK, OF OBERLIN, OHIO.

METALLIC PACKING.

Specification of Letters Patent.

. Patented Dec. 10, 1907.

Application filed May 29. 1907. Serial No. 376,302-

To all whom it may concern:

Be it known that I, EDWARD M. Coon, a citizen of the United States of America, residin at Oberlin, in the county of Lorain and tate of Ohio,'have invented new and useful Improvements in Metallic Packings, of which the following is a specification.

This invention relates to certain new and usefulimprovements in metallic packings, and particularly to metallic packings of that type comprising a cage or casing provided with interior grooves or cavities to receive packing rings to bear upon a piston rod.

The object ofthe invention is to provide a metallic packing having means arranged therein for catching the water formed by condensation of steam and discharging the same through a suitable outlet, and also having a novel construction and arrangement of parts by which formation of the condensation outlet is permitted without weakening the casing.

With these and other subordinate objects in view, the invention consists of the novel features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying drawing, in which Figure 1 is a side elevation and partial longitudinal section through a metallic packing embodying my invention. Fig. 2 is an outer end view of the packing, showing the piston rod in transverse section.

Referring to the drawing, 1 represents a longitudinally divided casing, provided at its outer end with a bolting head or flange 2 and also provided upon its interior with a series of annular grooves or cavities 3, in which the packing rings 4 are held when the two sections of the casing are secured together, said packing rings preferably being of the sectional type and held yieldingly in contracted condition by encompassing coiled springs 5.

The outer groove or cavity of the series 3 is somewhat shallower in depth than the remaining grooves or cavities of such series, and the packing ring held therein is arranged to serve as a barrier against the escape of the water of condensation from the outer end of the casing. Formed within the casing between said outer groove or cavity and the next adjacent groove or cavity is a catch basin, groove or recess 6, which may be either segmental or annular in form, accordingly, as the packing is arranged horizontally or vertically in order to provide for the eifective collection of the water of condensation.

The gutter 6 communicates with an outlet passage 7 of L-form, one portion of which extends radially out from the gutter between the outer end cavities of the series 3, while the other portion extends longitudinally of the casing and connects at its inner end with the outer end of the radial portion and at its outer end with an internally threaded recess 8 formed in the face of the head or flange 2, said recess being threaded for connection with an exhaust pipe through which the water of condensation discharges.

It will be observed that the longitudinal branch of the passage 7 accordingly extends partially between the outer surface of the N ing a sufficient thickness of metal between it and the outer surface of the casing to provide for the formation of the passage 7 in the manner described without weakening the casing, in which respect the construction is.

superior to one inwhich the outer end of the casing is formed wlth an enlarged cavity to catch the water of condensation, requiring a reduction in thickness of the casing, whereby the latter is weakened at a point whereon the greatest amount of strain falls from the pressure or thrust resulting from the reciprocatory motion of the piston rod.

In the operation it will be understood that the metallic packing rings prevent the escape of steam from the cylinder around the piston rod, but are ineffective in preventing the flow of water caused by the condensation of the steam. Hence the water of condensation passing the packing ring arranged in the cavity on the inner side of the gutter6 will flow into said gutter and thence discharge through the passage 7 into the waste pipe. The arrangement of this gutter between the outer packing ring arranged in theshallow cavity and the next adjacent ring disposed on the inner side of said cavity prevents the escape of the water of condensation past said first named ring, so that the full amount of Water will discharge through the outlet passage. By this means the casing will be effectually drained of the water of condensation without in any manner interfering with the operation of the packing rings and without weakening any of the parts of the packmg.

Having thus described the invention, what is claimed as new, is:'

1. A metallic packing comprising a casing 7 provided with a series of internal cavities, the outer cavity of the series being shallower than the other cavities, and packing rings arranged in said cavities, the casing also being provided between the shallow cavity and the neXt adjacent cavity with a condensation outlet extending radially from the piston space to a point beyond said shallow cavity and thence longitudinally past said outer cavity through the outer end of the casing.

2. A metallic packing comprising a casing provided with a series of packing ring cavities, the outer cavity of the series being sh a1 lower than the others, a gutter between said. shallow cavity and. the next adjacent cavity, and a condensation drain outlet of Llo1'n1, having a portion extending radially out and from said gutter between said. adjacent cavities to a point beyond the c: vities andv thence longitudinally of the casing and through the outer end. thereof.

In testimony whereof, I aiiix my signature in presence of two witnesses.

ElHVARD M. COOK. Witnesses:

CHARLES S. HAMMoNn, Louis C. BURGNETL

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