US1369362A - Piston-ring - Google Patents

Description

H. R. SEIFER'T.

PISTON RING.

APPLICATION FILED MAY 2. 1917.

1,369,362, Patented Feb. 2 2, 1921.

HE Se lye/'2 HENRY RICHARD SEIFERT, OF ELLSWORTH, WISCONSIN.

PISTON-RING.

Specification of Letters Patent.

Application filed May 2, 1917. Serial No. 165,933.

T 0 all whom it may concern:

Be it known that I, HENRY RICHARD. Snirnn'r, a citizen of the United States, residln at Ellsworth, in the county of Pierce an State of .Wisconsin, have invented certam new and useful Improvements in Piston- Rings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertalnsto make and use the same.

This invention relates to improvements in piston rings, particularly designed for use in connection with internal combustlon engines, and the invention has for its primary object to provide an improved terminal connection between the ends of a split ring to insure against leakage of the fluid past the 'oint.

1 With this and other objects in view, the

invention consists in the novel construction,

combination and arrangement of parts as will be hereinafter specifically described,

claimed and illustrated in the accompanying drawing, in which:

Figure 1 represents a plan view of the im-' proved piston ring,

Fig. 2 represents a fragmentary perspective view of the joint between the terminals of the ring,

Fig. 3 represents a transverse sectional view on the line 33 of Fig. 2,

Fig. 4 re resents a transverse sectional view on the ine 4-4 of Fig. 2, and

Fig. 5 re resents a fragmentaryp'erspec' tive view 0 one terminal of the ring.

Referring to the drawing in detail, Wherein similar reference numerals designate corresponding parts throughout the several views, the numeral 5 indicates the body of the ring which is rectangular in cross section, as usual, and is split to provide overlapping terminals 6. As in the ordinary types of piston rings, the inherent resiliency of the-material from which the ring is constructed normally maintains the ring in expanded condition and it is designed to be contracted when placed in the groove of the piston (not shown) so as to snugl fit against the inner-surface of the wall 0 th cylinder.

v Each of the overla pedends 6 is reduced to provide a tongue i and the inner, or adlimit the contracting movement of the ring.

Patented Feb. 22, 1921..

The opposed'side faces of the ring are formed with recesses 10 of concave formatron to receive and provide sockets for the tongues 8, which are slidably received in recesses 10.

When the ring is applied to a piston and positioned in the cylinder of an engine, it expands against the inner surface of the wall of the cylinder and engages the walls of the groove in the piston, so as to prevent leakage of the fluid between the cylinder Wall and piston. The tongues 7, fitting in the recesses 10, provide a seal to prevent fluid from leaking throughthe joint between the'terminals of the ring and the pressure from the top or bottom of the piston directed against the tongue 7 which is presented to the pressure, causes said tongue to be firmly pressed into the recess 10 to increase the security of the seal.

The interlocking tongues and grooves are segmental in cross section and are therefore devoid of square corners which form pockets in which carbon lodges. In preventing the deposit of carbon the tongues fit flatly in the grooves which disposes the outer sides of the end portions of the rings flush and thereby prevents scoring of the cylinders.

What I claim is:

A piston ring comprising a body consisting of a strip of material'of uniform transverse breadth throughout its length, said strip having overlapping end portions each- In testimony Whereof'I afiix mysignature in presence of two witnesses.

HENRY RICHARD SEIFERT.

Witnesses: JJ'B. MORELY, A. J. BAKER.

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