US1467408A

US1467408A - Piston ring

Info

Publication number: US1467408A
Application number: US593832A
Authority: US
Inventors: Herman P Wilke
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-10-11
Filing date: 1922-10-11
Publication date: 1923-09-11
Anticipated expiration: 1940-09-11

Description

Sept. 11, 1923. 1,467,408

H. P. WILKE PISTON RING' Filed oct. 11, 1922 Patented Sept. ll, 1923.

UNITED STATI-:s

PATENT. oFFicE.

HERMAN P. WILKE, OF BRAWLEY, CALIFORNA..

Arrs'roN RING.

application med october 1 1, 122. serial No. 593,83*"2.

To all whom it may concern:

Be it knownthat 1, HERMAN P. WILKE, a citizen of the United States, residing at Brawley, in the county of Imperial and State of California, have inventednew and vuseful'Improvements in Piston Rings, of

the provision of a piston ring which is provided with a peripheral groove which serves to collec-t oil working along the cylinder walls, the groove` communicating with a series of holes formed through the ring and establishing communication -with the nterior of the piston by means of other holes provided in the piston wall at the ring receiving groove therein.

Another obgect 1s the provlsion of a ring of this character in which the upper edge of the ring itself and the lower edge of the groove therein are beveled so that any oil whichmay have passed bythe oil groove in the ring may have an opportunity to get back into the groove when thev piston makes its upstroke, the other edges vbeing of a knife-like nature and exerting a scraping action on the down stroke of the iston.

An additional object isthe provlsion of a ringl of this character which will be very simple and inexpensive positive in action, eficient and durable in service, and a general improvement in the art.

lVth the above and other objects and advanta es in. view, the invention-consists in the detalls of construction to be hereinafter more v:tully described and claimed and illustrated in the accompanying drawings in which Figure 1 is an edge elevation of my ring. Figure 2 is a vertical section through the ring applied in a specially constructed piston.

Figure 3 is a horizontal section through the piston showing the ring in place, a portion of theV ring being likewise in section.

in manufacture,

Referring more particularly to the drawings, I have shown my ring 10 as being split inthe usual manner and preferablv provid ed with a stepped joint 11, though it is conceivable that some1 other'typ'e might be provided if found advantageous.l The ring is also shown as being of uniform thickness throughout asy this particular lfeature appears to be more practical.,

The main characteristic is a groove 12 which extends throughout the periphery and which is designed for the purpose of catchingoil scraped from the walls of the cylinder of the engine in which the ring is used.

The upper wall 13 of this groove is preferably slightly undercut at an angle, as shown, and the lower edge o r wall Vis correspondingly beveled, as indicated at 14, the inner corner being rounded', as shown lat 14a. The lower edge of 'the' ring itself is sharp and square-while the upper edge is beveled, as'

show-n at 15.

The ring constructed' as'above described is very eicient in use without the provision of any additionalfeatures but I have found it advantageous to provide several small holes 16 which lead from the groove 12 through the inner periphery. In this event the piston A infconnection with which the ring is used, is formed-with holes 17 which lead from the ring receivin groove B, tov.

the interior of the piston bo y. v

In actual practice it is really necessary to use. only one of these specially constructed rings on each piston though of course more may be employed if preferred. In the operation it will be seen that on the down stroke of the piston the lubricating oil which has previously splashed onto the cylinderfwalls is scraped oft' by the knife-like upper ed e ofthe groove 12, the oil passing into t e groove' and thence through the holes 16 to the back of the ring and then throu h the holes 17 in the` piston. and eventuay bac-k into the crank case of the engine. The object of having the beveled edge 15 at the top of the ring is to avoid a sharp edge so that any of the oil which may have Apassed by the oil groove in the ring may have an.

opportunity to work into the groove when the piston makes its upstroke. The peculiar design of the groove combined with the particular arrangement of shari and beveled edges makes it practically impossible .for any quantity of o1l to escape by the ring and pass into the combustion chamber. Oil consumption is grearly reduced and fouling of the spark plugs is' prevented, While the rpower is materially increased.

While I have shown land described the preferred embodiment of 'my invention, it is of course to he understood that I reserve the right to 'make such changes in the form, construction and arrangement of parts es will not depart from the spirit of the invention or the scope of the subjoined claims.

Having thus described myv invention, what I claim and desire to secure by letters pat'- ent is:

l. A piston ring provided in its periphery with e Continuous oilgroove having its upper edge sharp and its lower edge beveled, 'the lower edge of the ring being Sharp and square end the upper edge being beveled, the ring being formed with a series of holes leading from the groove to the inner periphery.

2. A piston ring provided in its periphery with a continuous oil groove having its upper edge sharp and its lower edge beveled, the lower edge of the ring being sharp and square and the upper edge being heveled, the ring being formed With a series of holes leading from the groove to ihe inner periphery, in combination with a piston provided With a series of holes leading from the ring receiving groove thereof to the interior.

In testimony whereof I a'x my si nature.

HERMAN iP. Wl KE.