US1302006A - Lubricating-cup. - Google Patents

Description

T. W. BURR.

LUBRICATING CUP.

APPLICATION FILED IULY 6,1918.

Patented Apr. 29, 1919.

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llTED @TATE% PATENT @FFTQE THOMAS W. BURR, 0F STONEHAM, MASSACHUSETTS.

LUBRICATING-CUP.

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Application filed July 6, 1918.

To all whom it may concern:

Be it known that I, THoMAs W. Bonn, a citizen of the United States, and a resident of Stoneham, county of Middlesex, State of Massachusetts, have invented an Improvement in Lubricating-Cups, 01": which the following is a specification.

This invention relates to that class of lubricating cups which are automatically operated by the vibrations of a moving vehicle, to which they are designed to be attached and which do not operate to feed the oil when held stationary.

Prior to my invention devices of this character have been produced which depended on the capi lary action in a wick to elevate the lubricant to a point at which it may be transferred to a delivering means, but, while such devices are operative in warm weather, they are liable to become inoperative in cold weather, as the oil in the wick is liable to stiiien to such an extent that the capillary action will be prevented.

The objects of my invention are to provide a lubricating cup of the general type above referred to, which will operate practicallyas satisfactorily in cold weather as in warm, and in which dependence on capillary action for the oil feeding operation is avoided. Also, to provide a device in which the use of moving or vibrating parts is avoided, so that it will not get out of order, and which is of simple construction and may be manufactured at small expense.

I accomplish these objects by the means shown in the accompanying drawings in which Figure 1 is a central vertical sectional view of a. lubricating cup embodying my invention, taken at the line 11 of Fig 2.

Figs. '2 and 3 are top and bottom views respectively of the cup partition which I employ.

Fig. 4 is a detail. plan view of the parti tion.

Fig. 5 is an enlarged, detail sectional view, on line 11 of Fig. 2. 7

As shown in the drawing, a cup at, of suitable size, is provided having a centrally disposed outlet nipple 7", which is adapted to be mounted in the oil passage of the parts to be lubricated and an inwardly projecting outlet pipe 0 is mounted within the cup chamber in vertical alinement with the passage through the outlet nipple, said pipe terminating below the level of the rim of the Specification of Letters Patent.

Patented Apr. 29, 15919..

Serial No. 243,672.

cup, and above the: normal liquid level there in, so that the lubricant must be raised to the upper end of the pipe 0, in order that it may be discharged from the cup.

' A partition plate 03 of thin sheet metal, is provided, the middle portion thereof being pressed into conical form and the peripheral portion thereof being provided. with a downwardly turned flange 6 having screw threads pressed therein which are adapted to be engaged with corresponding threads on the eX- terior of the cup rim. The upper end of the pipe 0 is provided with an inwardly tapering seat on its upper end, corresponding in inclination, to the inclination of the conical surface on the underside of the plate, so that, when the plate is screwed onto the cup, its underside will be seated against the upper end of said pipe, forming a tightjoint therewith. A central circular aperture (Z is formed in the plate, in register with the passage through the pipe 0, said aperture being extended radially, at one side to form a narrow opening or slot (Z for a portion of the distance to the periphery, as shown in Figs. 3 and 4:. The plate d is also formed to taper to a sharp edge about its central aperture, as shown in Fig. 5, and, as it is made of thin sheet metal, it may be reduced to a sharp edge at this point during the stamping operation. A wire screening 9 of very fine mesh is secured on the upper side of plate (Z, in position to extend over the aperture cl, and slot (Z therein, said screen being preferably soldered to said plate entirely about and close to the edges of said aperture. The portion of said screen which is disposed over the pipe 0 is of dished form, so that it de pends slightly into the same and is pressed against the sharp edge which surrounds said aperture (Z, so that direct communication from the lowcrchamber to the pipe 0, except through the screen 5/, is prevented. The plate (Z, is formed to provide an annular shoulder (Z on its upper side, adjacent its edge flange c and a flat cover it is provided, which is of the same diameter as said shoulder and is adapted to be fitted into the space inclosed thereby, so that it will be flush with the upper surface of the plate (Z.

A. filling tube 2' is provided, which extends through both the cover it and plate d, a ball check valve j, of common form, is provided in the upper end of said tube, so that the oil chamber in the cup may be readily filled with an oil can.

The bottom of the cup is formed in a continuous curve with the side walls, so that if the whole cup is vibrated, or swung from side to side, as it will be when attached to a vehicle in motion, the oil therein will be splashed up against the partition plate, and also against the portion of the screening which extends over the slot (Z The screen employed is of such fine mesh that oil splashed thereagainst will be entirely intercepted thereby, and, as a portion thereof will remain on the screen by capillary attraction, and, as the screen is inclined downward toward the portion thereof which is over the pipe 0, this oil will gradually flow down the wires of the screen until it passes onto the portion thereof which is over the pipe 0, and finally collects in a globule, or drop, on the under side thereof. This globule will increase in size until gravity action and the vibration will dislodge it, so that it will fall into the pipe 0 and thus be conducted to the surface which is to be lubricated.

O11 account of the fineness of the mesh of the screen and the small area of the surface thereof against which the lubricant may be thrown, and also on account of the fact that the lubricant employed is a comparatively heavy, slow flowing liquid, the lubricant will accumulate very slowly and a drop will only fall often enough to keep the parts well lubricated. The width and length of the slot (1 and the size of the wire mesh to be employed, are matters of experiment and depend, to a substantial extent, on the character of lubricant which is employed, and on the conditions under which the cup is to be used, but, under practically all-conditions, wheresiich a device would be used, the surface area of the screen, against which the oil in the cup may be thrown, will be very small, as compared with the entire area of the surface of the partition plate (Z.

A screen of fine wire is preferable, for the above purpose, to absorbent material, as the drops of oil would not readily become detached from material having a strong capillary attraction.

I claim 1. A lubricating cup having a liquidlubricant-holding chamber, an outlet pipe having an opening to said chamber above the liquid level therein, and arranged to permit the lubricant to be thrown therethrough when the cup is vibrated and a finely perforated screen arranged in said opening to restrict the passage of the lubricant from i said chamber to said pipe.

2. A lubricating cup having a liquidlubricant-holding chamber, an outlet pipe therefor having its inlet passage opening to the interior of the cup above the liquid level therein, and a fine mesh wire screen arranged to obstruct said inlet passage and eX tending upwardly from the pipe into a position to permit the lubricant in said chamber to be thrown thereagainst when the cup is vibrated, and to be conducted by the screen to said inlet passage.

8. A lubricating cup having-- a partition therein arranged to separate the interior thereof into an upper and a lower chamber, and an outlet pipe for the cup having a liquid-tight connection with said partitlon, to prevent the passage of liquid thereto directly from said lower chamber, said partition having an opening therethrough, one

Y portion of which is disposed in register with the inlet passage to said outlet pipe and another portion of which communicates with said lower chamber, and a fine wire screen attached to said partition over said opening and arranged to extend downwardly from points at one side of said pipe to points thereover.

4:. A lubricating cup having a partition therein arranged to separate the interior thereof into an upper and a lower chamber and having an opening therethrough, an out let pipe connected to said upper chamber and having a liquid tight connection with said partition to prevent the passage of liquid directly thereto from the lower chamber and means extending over said opening, to obstruct the free passage of liquid therethrough from the lower to the upper chamber, and arranged to conduct the liquid to said outlet pipe.

5. A lubricating cup having a partition therein, arranged to separate the interior thereof into an upper and a lower chamber, and having an opening therethrough, an outlet pipe leading upwardly through said lower chamber and connected to said upper chamber through a portion of said opening, a fine mesh, wire screen arranged to obstruct the passage of liquid from the lower to the upper chamber and to the outlet pipe and arranged to extend downwardly from points at one side of said pipe to points thereover.

6. A lubricating cup having an inclined partition therein dividing the same into an upper and lower chamber and having an opening therein leading from an upper to a lower portion thereof, an outlet pipe disconneeted from said lower chamber and opening into said upper chamber through the lower portion of said opening, and a nonabsorbent screen held in close engagement with said partition about the edges of said opening.

In testimony whereof, I have signed my name to this specification.

THOMAS W. BURR.

Copies of this patent may be obtained. for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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