US1119522A - Oiler. - Google Patents

Description

R. G. McDOWELL.

OILER. I APPLICATION FILED JULY 12, 1911 1 1 19,522., Patented Dec.1,1914

- shown to illustrate the location of the oiler UNITED STATES ROBERT GEORGE MCDOWELL, OF WALKERVILLE, MONTANA, ASSIGNOR TO INGERSOLL- RAND COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

OILEB.

Specification of Letters Patent.

Patented Dec. 1 1914 Application filed July 12, 1911. Serial No. 638,101.

resident of lValkerville, in the county of Silver Bow and State of Montana, have invented a new and useful Improvement in Oilers, of which the following is a specification.

This invention relates to oilers for direct acting engines, such, for instance, as rock drills, and it has for its object to provide means for feeding oil in very small quantities to the pressure fluid supply for the engine, said feeding means being controlled by vibrations due to the operation of the engine.

A practical embodiment of the invention is represented inthe accompanying drawings, in which,

Figure 1 represents the oiler in top plan, Fig. 2 is a front view 'of the same, Fig. 3 is a section taken in the plane of the line A-A of Fig. 1, a portion of a rock drill being and its other branch 8 adapted to receive the casing 9 of the oiler. This casing 9 serves as a reservoir for the oil and it is provided at its outer end with a removable filling cap 10. The inner end of the casing 9 projects into the T-coupling 3 and is preferably tapered so as to give a greater amount of space within the coupling for the passage of the pressure fluid through the coupling. A hollow valve 11 has its hollow stem 12 projecting axially into the oiler casing 9, to

a point adjacent to the outer end ofv the casing. A'seat 13 for the valve 11 is provided at the inner end of the casing, the bore oat,

the casing having a cylindrical reduced por-. tion 14 leading inwardly from the valve seat 13 to a slightly enlarged cylindrical portion 15, said enlarged cylindrical portion 15 opening into the oil chamber 16. A valvev seat 17 is provided where the chamber 16 communicates with the portion 15 of the bore and a normally open auxiliary valve18 drill cylinder is denoted by 1,v

is provided on the hollow valve stem 12 in I position to limit the opening movement of the valve 11 and close communication from the oil chamber 16.. A nut 19 looks the valve 18 in position. Acoil spring 20 is interposed between the valve 18 and the interior annular shoulder 21 at the juncture of the portions 14 and 15 of the bore of the casing,

which spring serves to hold the valve 11 normally closed and the valve 18 normally open. from the. oil chamber 16 to the valve seat 13, H1 the present instance, by flattening thesides of the valve stem as shown at 22.

Proceeding to describe the operation of the oiler: The hollow valve ll and valve stem 12 permit the pressure fluid to pass therethrough and exert its pressure on the top of the oil within the chamber 16. When the engine is in operation, the vibrations of the engine will shake the valve stem 12. sufliclently to open the valve 11 slightlv and thus permit the oil to pass therethrough in small quantities but uniformly, intothe pressure fluid supply passing to the engine. This is readily accomplished by reason of the long valve stem which is readily vibrated by Open communication is establishedthe vibrations of the engine, the closing spring 20 for the valve 11 being adjusted to the required tension to permit more or less quantities of oil to pass through the valve 11, the Weaker the tension of the spring 20, the more freely will the oil pass through the valve 11. The auxiliary valve 18 limits the opening movement of the oil distributing valve 11 and also closes the inner end of the oil chamber 16 when the valve 11 is at the limit of its movement away from its seat 13. This oiler can be used in any position from vertical to horizontal.

While I have shown this oiler in connec tion with a rock drill, it is to be understood that I do not wish to limit myself to the particular application shown and described herein but contemplate its use in connection with the pressure fluid supply for engines of various characters.

What I claim is:

1. In an oiler for pressure fluid operated tools having a fluid supply pipe, a closed oil reservoir having an oil supply passage leading to said fluid supply pipe, a hollow valve for said passage having a hollow valve stem afiording communication between said fluid supply pipe and said oil reservoir and a spring for resiliently elosing said valve, the said sprinQbeing of slight tension to permit the opening out said valve from the vibration of said tool.

2. In an oiler for pressure fluid operated tools having a fluid supply pipe, a closed oil reservoir having an oil supply passage leading to said fluid supply pipe, a hollow valve for said passage having" a hollow valve stem afiording communication between said fluid supply pipe and said oil reservoir a spring for resiliently closing said valve, the said spring being of slight tension to permit Liiaeaa the opening of said valve from the vibration of said tool, and an auxiliary valve on said valve stem for limiting the opening movev ment of the first named valve and closing the said passage.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two Witnesses, this twenty eighth day of June, 1911.

ROBERT GEORGE MCDOWELL.

Witnesses:

A. S. UHLER, H. G. HOPKINS.

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