US1007283A - Metallic piston-rod packing. - Google Patents

Description

W. HOEY. METALLIC PISTON ROD PACKING. APPL-IOATION FILED run, 1911 1,007,283. l Patented Oct. 31, 1911.

WILLIAM I-IOEY, 0F GRAND RAPIDS, MICHIGAN.

METALLIC PISTON-ROD PACKING.

Application filed February 11, 1911.

Specification of Letters Patent.

Patented Oct. 31, 1911.

Serial No. 608,028.

To aZZ whom it may concern. 7

Be it known that I, WILLIAM I-IonY a citizen of the United States of America, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Metallic Piston-Rod Packing; and I do hereby declare the following to be a full, clear, and exact description of the invent-ion, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in metallic piston rod packings and its object is to provide a device that may be readily removed from the piston rod and again replaced thereon without disconnecting the piston rod from other parts of the engine, and to provide the device with various new and useful features, and it consists essentially of a globular packing proper, divided into two substantially equal parts, the dividing seams being inclined to the direction of the axis, and cupped rings engaging the same, said rings being divided at opposite sides and secured by suitable fastening means whereby the rings and packing may be readily removed from the piston rod as occasion may require, as will more fully appear by reference to the accompanying drawings, in which Figure l is a side elevation of a device embodying my invention with portions shown in vertical section in the plane of the axis; Fig. 2 is a transverse section detail on the line 22 of Fig. 1; Fig. 3 an enlarged detail of the means for securing the parts of each ring to each other; and Fig. 4 a perspective detail of the globular packing.

Like numbers refer to like parts in all of the figures.

1 represents the piston rod of a steam engine. 2 a cylinder head of the same. 3 a chamber surrounding the piston rod to contain the packing. at a removable head to this chamber. 5 represents a metallic packing member globular in external form, through the axis of which is a cylindrical opening to receive and fit closely around the piston rod. This packing member is divided into two substantially equal parts at opposite sides as at 6, the plane of the division being inclined to the direction of the axis of the opening, and also inclined to a line drawn radially opposite the middle of the division. The inclination to the direction of the axis being about 15 and the inclination to the radial line being about 45. This packing member is clamped in place and held between two opposing rings 7 cupped at their adjacent sides to fit the outside of the packing member as shown, the end of the outer ring also being fitted steam tight against the division engaged at one side by a clamping member 9 having arms embracing the lugs between which arms is pivoted a lever 10 having cam surfaces 11 engaging the lugs oppositely to the member 9 whereby when the lever is turned down upon the surface of the ring, the lugs are, securely clamped to each other. By turning these levers 10 away from the ring the clamps can be removed fromthe lugs and the ring separated.

The packing 5 is preferably made of a composition of soft metal and the pressure of the rings upon the same due to the spring 12 will force the same to yield slightly as it wears and thus maintain a steam tight joint. The inclination of the surfaces to the radial line where the packing is divided enables the surfaces to slip one upon the other to reduce the circumference as the packing closes in upon the piston rod, and also brings them in close contact and as the piston rod move ment is not in the same line, so that the seam if at all open is soon filled by metal and grease.

I am thus able to provide 'a device that may be readily removed from the piston rod and again replaced thereon as occasion may require, that will automatically take up the wear by the compression of the packing upon the piston rod and will not leak steam.

What I claim is I 1. A metallic piston rod packing, comprisinga divided globular packing surrounding the piston rod, a divided ring also surrounding the piston rod and engaging the pack ing, a lug on the ring at each side of the division thereof and an eccentric clamp embracing the lugs.

2. A metallic piston rod packing, comprising a divided globular packing surrounding the piston rod, rings oppositely engaging the packing, each ring being divided at oppo-r site sides, lugs on the rings at opposite sides of the division thereof, and eccentric clamps, embracing the lugs to secure the parts of each ring to each other.

3. A metallic piston rod packing, comprising a globular packing of soft metal, having an axial opening therethrough to receive the piston rod, said packing being divided at opposite sides in a. plane inclined to the line of'its axis, rings oppositely engaging the packing, and means for forcing the rings toward each other to compress the packing upon the piston.

4. A metallic piston rodpacking, comprising a globular packing of soft metal having an axial opening to receive the piston rod and also divided at each side in a plane inclined to the direction of its axis and also inclined to a radial line drawn opposite its middle, and rings oppositely engaging the packing to compress the same upon a piston rod.

5. A metallic piston rod packing, comprising a globular soft metal packing having an axial opening to receive a piston rod, and also divided at each side in a plane inclined to the line of the axis and also inclined to a radial line drawn opposite its middle, rings oppositely engaging the packing and cupped to fit upon the same, each ring being divided at opposite sides and provided with lugs at opposite sides of the division, and eccentric clamps embracing the lugs to secure the parts of the rings to each other.

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

WVILLIAM I-IOEY.

Witnesses:

LUTHER V. MOULTON, JAMES B. HoEY.

Copies of this patent may be obtained forifive cents each, by addressing the Commissioner of Patents, Washington, D. c.

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