US1022946A - Sight-feed lubricator. - Google Patents

Description

F. J. HULL.

SIGHT FEED LUBRIGATOR. APPLICATION IILED JULY 12, 1910.

Patented Apr. 9, 1912.

COLUMBIA PLANOG-RAFH C0,,WASHINGT0N, u. c.

. UNITED STATES PATENT OFFICE.

FOSTER J. HULL, OF NEW YORK, N. Y., ASSIGNOR TO THE THOMAS W. PANGBORN COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

SIGHT-FEED LUBRICATOR.

Specification of Letters Patent.

Patented Apr. 9, 1912 To all whom it may concern:

Be it known that I, FOSTER J. HULL, a citizen of the United States, and a resident of the borough of Brooklyn, city of New York, State of New. York, have invented certain new and useful Improvements in Sight-Feed Lubricators, of which the following is a specification.

My invention relates to improvements in sight feed lubricators and comprises a structure particularly applicable to lubricators to be used in connection with air driven tools, and the like, though applicable to other uses.

The invention consists in the novel structure hereinafter described and in other features hereinafter described and particularly pointed out in the appended claims.

The object of my invention is to improve the construction of sight feed lubricators.

I will now proceed to describe my invention with reference to the accompanying drawings and will then point out the novel features in claims.

In the drawings: Figure 1 shows a side view of the lubricator and indicates the same as attached to the cylinder of a compressed air tool; Fig. 2 shows a top view of the lubricator; Fig. 3 shows a vertical longitudinal section of the lubricator; and Fig. 4 shows a perspective view of one of the two main sections of the lubricator, the other main section having been removed.

The lubricator herein described is intended to discharge lubricant, at a regulated rate, intothe working fluid (compressed air,

steam, etc), of a fluid pressure actuated machine, such as an engine, compressed air tool, etc.

The lubricator'comprises two main sections, of which one comprises the inlet duct for the working fluid of the engine ortool, and a throttle valve for regulating the passage of working fluid to such engine or tool, while" the other section of the lubricator comprises an oil reservoir, a sight feed tube, a regulating valve controlling the flow of lubricant, a mixing chamber,'and other features hereinafter described. Between these two sections of the lubricator there is a screen which serves the double purpose of spreading out the current of working fluid over a considerable area, and of holding back dust, scale and the like, which may be carried by the working fluid, and is quite likely to be carried by the working fluid when that fluid is compressed air; and this screen is so located and arranged that moisture carried by the working fluid (as is apt to be the case when that working fluid is compressed air) and which may collect upon the screen, will tend to wash down the screen and so to carry down with it the impurities collecting on the screen.

In the drawings A and B designate the two sections above referred to, the section A comprising the throttle valve 3, the section B comprising the oil reservoir 27, the sight feed tube 21, the regulating valve 22, and other features hereinafter described.

1 designates the pipe for conveying compressed air or other working fluid to the lubricator.

2 (Fig. 1) designates an air engine or other tool operated by the working fluid so supplied.

The interior of section A of the lubricator comprises two chambers, 7 and 8, connected by a duct 4 controlled by the valve 3; which valve is of the nature of a needle valve, and may be opened or closed by means of a valve stem 5 and hand wheel 6, in the ordinary manner.

- Between the sections A and B of the lubricator there is a broad and shallow passage 9, communicating with the chamber 8 of section A; and in this passage 9 is located the screen 17. To make a tight joint between sections A and B, one of these sections (A in the construction shown) is provided with a projecting rib 12, and the other section (B in the construction shown) is provided with a corresponding rib; the ends and sides of the screen are clamped between the adjacent faces of sections A and B, these sections being held together by means of bolts 16, and -a suitable gasket. 15 is also provided between sections A and B. By this construction, a tight joint between sections A and B, and around the edges of screen 17 is assured, and at th same timeit is very easy to remove the screen for cleaning or replacement; and for that matter, it is very easy to remove the section A, for repair of the valve, in case the latter becomes cut, or for any other reason. i

The screen 17, being of large area as compared with the port 4 and chamber 8, allows free passage of theworking fluid through its apertures, notwithstanding that said screen may be of very fine mesh. The location of this screen in a passage much broader than chamber 8, and directly opposite the mouth 10 of this chamber 8, insures the spreading out of th working fluid over the face of said screen, so that practically the entire face of the screen is effective for the screening of the working fluid.

In the lower part of section B of the lubricator there is a mixing chamber 18, which contracts gradually toward the opening of discharge pipe 30; and with th1s chamber 18 the passage 9 communlcates. The floor 19 of this chamber 18 is below the level of the bottom of the screen passage, 9,- so that oil which may accumulate in this chamber 18 will, ordinarily, be at a lower level than the screen 17, and so will not ordinarily reach the screen and be carried up the surface thereof by capillarity or other similar act-ion. Thereby fouling of the screen through union of oil with dust on the screen is obviated.

The oil reservoir 27 is connected with the chamber 18 by means of a tube 21, which preferably is of glass or other transparent material, and therefore is a sight tube. Within this tube 21 there is a removable valve seat 23; and a needle valve 22 is arranged to coact with said seat to regulate the flow of oil or to stop such flow altogether. In the front of the member B there is an opening 39, through which this tube 21 passes, whereby oil passing down the tube may be seen. Needle valve 22 is provided with a stem having a screw-threaded shank 24 and handle 25, whereby said needle valve may be adjusted; and a lock-nut 26 is provided to secure said valve in any position to which it may be adjusted. The oil reservoir is provided with a filling plug 28, upon the removal of which the oil reservoir may be filled readily; and a duct 31 is provided, connecting the upper part of this oil reservoir with passage 9, so that the pressure in said oil reservoir may be the same as in the passage 9. In the bottom of the chamber 18 there is a removable cleaning plug 29.

What I claim is 1. A lubricator comprising two sections, one provided with an inlet connect-ion, the other provided with an oil reservoir, said sections arranged to be secured together and provided with a passage between them, said sections arranged to separate along a line which is longitudinal with respect to said passage, and a screen in said passage through which fluid admitted through said inlet connection will pass, said second sec tion provided with means for discharging lubricant into the fluid after its passage through said screen.

2. A lubricator comprising two sections, one provided with an inlet connection, the

other provided with an oil reservoir, said sections arranged to be secured together and provided with a passage between them, said sections arranged to separate along a line which is longitudinal with respect to said passage, and a screen in said passage and arranged longitudinally therein, through which fluid admitted through said inlet connection will pass, said second section provided with means for discharging lubricant into the fluid after its passage through said screen.

3. A lubricator comprising two sections, one provided with an inlet connection, the other provided with an oil reservoir, said sections arranged to be secured together and provided with a passage between them, and a screen in said passage clamped at the edges between the adjacent surfaces of said sections, through which screen fluid admitted through said inlet connection will pass, said second section provided with means for discharging lubricant into the fluid after its passage through said screen.

4. A lubricator comprising in combination an oil reservoir, a passage for fluid to receive the lubricant, said passage extending approximately vertically along the side of said oil reservoir and thence approximately horizontally beneath said oil reservoir, and a screen in the vertical portion of said passage through which the fluid will pass, before passing beneath said oil reservoir, said reservoir provided with means for discharging lubricant into the fluid after its passage through said screen.

5. Alubricator comprising in combination an oil reservoir, a passage for fluid to receive the lubricant, said passage extending approximately vertically along the side of said oil reservoir and thence approximately horizontally beneath said oil reservoir, and a screen in the vertical portion of said passage through which the fluid will pass, before passing beneath said oil reservoir, the floor of the horizontal portion of said passage being below the lowest portion of the vertical portion of said passage, said reservoir provided with means for discharging lubricant into the horizontal portion of said passage.

6. A lubricator comprising in combination an oil reservoir, a passage for fluid to receive the lubricant, said passage extending approximately vertically along the side of said oil reservoir and thence approximately horizontally beneath said oil reservoir, and a screen in the vertical portion of said passage through which the fluid will pass, before passing beneath said oil reservoir, the floor of the horizontal portion of said passage being below the lowest portion of the vertical portion of said passage, said reservoir provided with means for discharging lubricant into the horizontal portion of said passage, the said lubricator provided with a corresponding orifice extending from the floor of the horizontal portion of said passage downward, and means normally closing said orifice.

the lubricator further provided with an oil reservoir, and with a passage extending fromthe said chamber substantially downward along the oil reservoir and thence beneath said oil reservoir, and a screen in the vertical portion of said passage through which fluid entering through said admission connection will pass, the vertical portion of said passage, containing the said screen, being relatively broad and shallow as compared with said chamber, the said screen located in front of the connection of said chamber to said passage, said lubricator provided with means for discharging oil into the portion of the passage beneath the oil reservoir.

8. Alubricator comprising in combination an oil reservoir, an inlet connection, a chamber beneath the oil reservoir, means for delivering oil from said reservoir to said chamber, and a substantially vertical passage connecting said inlet connection with the said chamber beneath the oil reservoir and containing a substantially vertically arranged screen through which fluid will pass in passing from said inlet connection to said chamber beneath the oil reservoir.

9. A lubricator comprising two sections, the one provided with an inlet connection, and with a controlling valve, the other provided with an oil reservoir and with a mixing chamber, and means for delivering oil from said reservoir to said chamber, a passage being provided between said sections connecting said mixing chamber to a cham ber of the first said section located beyond the controlling valve of that section, said sections arranged to separate along a line which is longitudinal with respect to said passage, and a screen interposed between the said controlling valve and the mixing chamber.

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

FOSTER J. HULL.

Witnesses:

F. F. GRAMPToN, M. A. BUTLER.

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

Washington, D. C.

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