US787576A - Oil-displacer for journal-lubricators. - Google Patents

Description

No. 787,576. PATENTED APR. 18, 1905.

A. H. JOHNSON. OIL DISPLAGEE FOR JOURNAL LUBRIGATORS.

APPLICATION FILED SEPT.14, 1904.

UNirnn rates ALBERT HOIVARD JOHNSON,

Patented April 18, 1905.

PATENT Oriana.

OF TAKOMA, MARYLAND.

SPECIFICATION forming part of Letters Patent No. 787,576, dated April 18, 1905.

Application filed September 14:, 1904. Serial No.

To In whom, it 'n'o/r/ concern:

Be it known that LALBERT HOWARD J GEN- SON, a citizen of the United States, residing at Takoma, in the county of Montgomery and State of Maryland, have invented certain new and useful Improvements in Oil-Displaeers for Journal-Lubricators; and I do hereby declare the :following to be afull, clear,

and exact description of the invention, such as will enable others skilled in the art to which 1 it appertains to make and use the same. I

In journal-lubricators in which the lubrication of the journal is maintained from a reservoir the oil after being used a certain length of time becomes unfit for further use from different causes, and the usual provision for its discharge from the reservoir pre paratory to introducing a fresh supply is by a passage in the bottom of the reservoir controlledbyascrew-plugorpetcock. The screw and the petcock are liable to become loose and allow leakage of the oil, and from this cause the unobserved loss of the lubricant is a seri ous matter, particularly in electric motors, which have been thereby rendered inoperative and injured.

My invention provides for displacing or ejecting the used oil from the reservoir by a plunger arranged to control a bore duct or channel beneath or outside of the reservoir, j having communication with its lowest part and open to the air above the level of the oil in the reservoir.

A feature of my invention is that the bore duct or channel serves also the means of supplying the reservoir, the means for gaging the supply of oil, the means for allowing the displacing or ejecting the used oil, and the means for forming a casing for the discharging or ejecting function of the plunger, while the latter serves as a stopper for the bore or duct.

The accompanying drawings illustrate my invention in the form in which I prefer to use it; but it will be understood that my invention is not limited to the precise form and 1 construction herein illustrated and described, as various modifications and changes may be made without exceeding the scope of the invention or the claims in which it is set out.

Referring to the drawings, Figure 1 shows in vertical transverse section the oil-reservoir of a journal-bearing having applied thereto my invention for ejecting the used oil from the reservoir. Fig. 2 is a sectional view showing the plunger in the position to eject the oil. Fig. 3 shows an electric motor with the oil-reservoir thereof containing my invention. Fig. 4 shows in longitudinalsection a journal-bearing and lubricating-reservoir having my invention applied thereto. Fig. 5 shows one of the motor end plates or shields with my invention applied thereto.

In the drawings I have shown journalbearings and oil-reservoirs of two forms, in one of which oil-supplying rings are provided; but my invention may be used with or without automatic oilfeeds.

In Fig. 1 the oil-reservoir is shown as being formed as an integral part of a circular web or shield 1, from which the reservoir-casting 2 projects or forms a part with its lower half 3 preferably of V shape, the better to adapt it for conveniently carrying out my inven tion. In the reservoir an oil-feeding ring 4 rests upon and depends from the shaft 5,

while in Fig. 4 is seen the journal-bearing for the shaft and its support within the oil-reservoir. The walls of the reservoir (seen in Fig. 1) diverge upward in opposite directions from the lowest angle-point 6, and within these walls are formed a correspondinglyshaped bore or duet,-the one part 7 being preferably of larger diameter than the bore 8 on the other side, both open at their upper ends and both meeting at the lowest point. A wall passage or slot 9 forms a communication between the reservoir and the larger bore at the bottom of the reservoir. A plunger 10 fits and closes the larger bore or channel and closes the passage or slot by which it and the reservoir have communication. The plun ger is preferably of greater length than the bore and terminates in a knob or handle 11, by which it is reciprocated within the bore in its function of discharging or ejecting the used oil from the bores or ducts, and to render this plunger function effective the plun- 'er-receiving here may have a length greater than that of the smaller bore. As a means of preventing the plunger from being entirely withdrawn from its bore a screw 12, entering the wall at the upper end of the bore, engages a longitudinal groove 13 in the surface of the plunger, and this groove being closed at the inner end of the plunger allows its full stroke, but prevents it from being drawn entirely out except for supplying the reservoir with oil when the screw is removed. Obviously any suitable means may be devised for this purpose. In supplying the oil through this larger bore or duct it passes therefrom through the wall passage 9 or slot into the reservoir until it attains a level therein that will cause it to be seen at the open end of the small bore, so that the latter I thereby forms a gage for the oil-supply, and there can be no leakage at either end of the bore or channel. When it is deemed that the oil is unfit for further use, the plunger is withdrawn to open the wall passage or slot from the reservoir, letting the oil flow therefrom into the bore. From thence it is ejected by driving the plunger in, and this operation of the plunger is repeated until the reservoir is emptied, when it is supplied with fresh oil and the supply-duct closed by the plunger; but whether the outlet passage or slot from the reservoir be open or closed there can be no leakage, because the filling of the bores can only be to the level of the oil. I prefer to make the plunger branch of the bore of comparatively larger diameter and of greater length than the discharging branch of the bore, because thereby the plunger has eflicient ejecting capacity.

A supply-opening may be made in the up per wall of the reservoir, closed by a lid or other means. The angular sides form a bottom ridge, so that the oil flowing out of the open end of the discharge-duct under the ejecting force of the plunger will run down the incline and collect at and drip from this bottom ridge. Referring to the communication between the reservoir and the plunger duct or channel, I prefer to make it in the form of a slot rising from the bottom of the reservoir and about as wide as the diameter of the plunger, so that it will not be liable to become clogged and will allow a free outlet of the oil. The lower end of the slot stands obliq ue to aflord the plunger suiiicient ejecting action.

I claim 1. In a j ournallubricator, the oil-reservoir provided with bores or channels open at both ends above the level otthe Oll therein, said reservoir at its bottom having communication with the bore or channel, and a plunger adapted to close and open said communication and to eject from the open end of said bore the oil from the reservoir.

2. I11 a journallubricator, the oil-reservoir having its lower portion of V shape, a bore or channel in each side wall meeting at their lower ends and open at their upper ends, there being a passage or slot leading from the reservoir into one of said side bores, and a plunger adapted to close and to open said passage or slot and to eject the oil from the reservoir through said bores.

In a journal-lubricator, the oil-reservoir having its lower portion of V shape, there being a bore or channel in each side wall meeting at their lower ends and open at their upper ends, one of said side wall bores of greater diameter than the other, and a passage or slot leading from the reservoir into the larger of said side bores, and a plunger adapted to close and to open said passage or slot and to eject the oil from the reservoir through the small bore.

4. In a j ournal-lubricator, the oil-reservoir provided with bores or channels open at both ends above the level of the oil therein, said reservoir having a bottom communication with the bore or channel, a plunger adapted to close and to open said communication and to eject from the open end of said bore the oil from the reservoir, and means whereby the plunger is prevented from being with drawn from said bore or channel.

5. In a journal-lubricator, the oil-reservoir, there being a channel or duct around its under side and flanking both its sides, and a passage or slot in the bottom of the wall leading from the oil-reservoir into one side of the duct or channel, and a plunger adapted to be reciprocated in one side of the channel or duct and to control the communication between the reservoir and said channel, for the purpose stated.

6. In a j ournal-lubricator, the oilreserv'oir, there being a duct or channel belox T the same having communication below the same open at a point above the level of the oil, and a plunger within said duct or channel for ejecting the oil from the reservoir.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALBERT HOWARD JOHNSON.

Witnesses:

A. E. H. JOHNSON, GUY H. JoHNsoN.

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