US683114A - Graphite lubricator. - Google Patents

Description

No. 6s3,n4. 'Patented sept. 24, mol.v

F. GIELUW, Sn. GRAPHITE LUBRICATUB. Application filed Dec. 3, 1900.) (No Model.)

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almufnglll No. 6a3,||4.- Ptenfed sept. 24, |901.

`F. GIELow, sx. GRAPHITE LUBRICATOR.

Applfc-acon me@ Dec. 3, 1900.)`

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No. 683,!!4. Patented Sept. 24, |9DI. F. GIELow, sn. GRAPHITE'LUBBICATUR.

(Application flled Dec. 3, 1900.) (No Model.) v SSheeis-Sheet 3.v

UNTTED STATES PATENT EETCE..

GIELOIV, JR., AND CHARLES BURIWIEISTER, OF SAME PLACE.

GRAPHITE LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 683,1 14, dated September 24, 1901.

' Application filed December 3, 1900. Serial No. 33,441- (No model.)

cylinder of an engine or an air-pipe for lead-v ing to the cylinder of a compressor.

Its objects are to simplify and cheapen and generally improve the construction of devices of this kind, and particularly to prevent the entrance of iuid from the pipe into which the lubricant is to be delivered into the reservoir.

The invention consists in the construction hereinafter described and which is illustrated in the accompanying drawings, in Which- Figure 1 is a view, partly in elevation and partly in vertical section, of the preferred form of construction of the lubricator. Fig. 2 is a detail vertical section of the reservoir on a plane perpendicular to that of Fig. 1, some of the driving mechanism being shown in elevation. Fig. 3 is a detail plan on the line 3 3 of Fig. 2. Fig. 4 is an elevation, partly in section, of a modified form of lubricator. Fig. 5 is a detail vertical section of the lubricator shown in Fig. 4. Fig. 6 is a detail plan section on the line 6 G of Fig. 5. Fig. 7 is an inverted detail plan on the line 7 7 of Fig. 1. Fig. S is an enlarged detail, partially in section, of the valve-casing and check -valve illustrated in Fig. 1, the valve being moved from its seat. Fig. 9 is a detail section on the line 9 9 of Fig. 6. Fig. 10 is a sectional detail of a part of the lubricator, and Fig. 11 is a sectional viewon the line 11. 11 of Fig. 10.

In the preferred form of construction a cup or reservoir 10 for containing a supply of graphite is provided with a screw-cap 11 and with a discharging-barrel 12, leading downwardly through its bottom and opening into a chambered casing 13, which discharges into a pipe 14 for conveying the graphite. to the part to be lubricated, such as the cylinder of a steam-engine or air-'compressor, a fluid-pressure pipe 15 leading to the chamber of the casing 13. A plunger 16, reciprocating through an apertured guidebar 17, set across the interior of the reservoir 10, is adapted to enter and to be entirely withdrawn from the barrel 12 at each of' its strokes. This plunger is attached to a loose eccentric-yoke 1S, having an upwardly-prejecting stem 19, which enters a guide-socket 20 of the cap 1l. An eccentric 21, mounted upon a shaft 22, journaled in the side Walls of the reservoir 10, engages the yoke 18 and causes thereciprocation of the plunger. One end of the shaft 22 passes outwardly through a stuffing-box 23 and carries a ratchet-Wheel 24, driven by means of a spring-pawl 25, carried by an oscillating arm 26, fulcrumed upon the shaft 22 and actuated by any suitable mechanism. A check-valve 27, preferably conical in form, is applied to the delivery end Vof the barrel 12,and is normally held to its seat by a spring 28, reacting between the head of the valve and a cross-bar 29, set across the chamber of the casing 13. The pipe 14 is preferably provided With a glass sight-tube section 30, of ordinary form, and in that event a contracted nozzle 31 is employed, so as to discharge the lubricant into the sight-tube section in small masses. If desired, a similar sight-tube section 32 may be incorporated into the pipe 15. The plunger 16 is provided with a crossarm 33 for loosening up the graphite Within the reservoir 10 and insuring its feed to the barrel 12 at each withdrawal of the plunger therefrom. This cross-arm is preferably triangular in cross-section, one of its angles being upwardly directed and one of its sides being downwardly directed, so that it may freely pass through t-he graphite as the plunger ascends, but tends to force it downwardly as the plunger advances.

In the construction illustrated in Figs. 4, 5, and G a barrel 37 is set transversely across the lower end of a reservoir 8l and opens to the interior thereof. A plunger 38 reciprocates Within this barrel, and its forward end recedes partially across the opening to the IOO interior of the reservoir, so that graphite may enter the barrel and upon the advance of the plunger will be forced forwardly to the deliveryend ot' the barrel. The plunger 38 passes outwardly through the stuffing-box 39, and power may be applied to it by means of an eccentric 40, driven by means of a ratchetwheel 4l or by anyother suitable means. In

this instance the barrel discharges into a rzo chamber-ed casing 42, and its discharge end is closed by a conical check-valve 43, normally held to its seat by means of la spring 44, reacting between the head of the valve and a plug 45, screwed into the casing 42. A f1uid-pipe46 enters the casing42 from above, and a conveying-'pipe 47 leads downwardly yfrom the casing, and bot-h of these pipes may be provided with sight-feed sections 48 49, as shown, if desired. A follower 50 is located within the reservoir 34 and is forced downwardly by means of a spring 51 reacting between it and the cap 35, so as to press the graphite down into the barrel 37.

The lubricator may be supported in any preferred manner. As shown in Fig. l, the tube 14 will serve as an adequate support. As shown in Fig. 4, a standard 52 is provided for it.

The lubricator is particularly adapted for the use of flake graphite, which while dry is quite mobile and readily feeds to the discharging-barrel upon the recession of the plunger. As the plunger advances the contents of the barrel will be forced forwardly and discharged against the resistance of the check-valve, becoming of course, impacted. The conical forni of the valve separates the emerging rod of lubricant into small masses, which are carried forward by the fluid entering from the pipe 15 or 46 whether Vsuch fluid be steam, water of condensation, or air. Upon the recession of the plunger the delivery end of the barrel remains filled with a comparatively solid rod of graphite,and whether the valve does or does not reach its seat the conveying iiuid is eifectually prevented from passing into the barrel, and hence there is no possibility of the contents of the reservoir becoming moistened thereby, and thus rendered less mobile. This is the more effectually prevented by making the delivery end ofthe barrel somewhat iiaring, as shown, so that the pressure in the conductin g-pi pe is resisted by a conical-shaped mass of graphite. The agitation due to the reciprocation of the plunger with its cross-arm and eccentric yoke in the construction of Fig. l and the downward pressure of the spring 5l in the construction of Fig. 4 insures the complete filling of the barrel upon the recession of the plunger. In the latter construction there is used an agitator of some kind, as shown a cross-arm 36, carried by the plunger and projecting into the interior of .the reservoir. Preferably means are provided foradjusting the tension of the spring controlling the conical valve at the delivery end of the barrel. As shown in Fig. 10, this valve is provided with a stem 52, which enters a longitudinal counterbored guide-socket in a threaded stem 53, entering the case 42 through a threaded aperture opposite the end of the barrel 37. A spring 54, coiled around the valve-stem, reacts between the valve and the bottom of the counterbore of the socket of the stem 53, and the latter stem is provided with a radial flange 55, by which it may be turned to regulate the tension of the spring. A stuffing-box 56 is applied to the apertured end of the casing 42 to prevent leakage around the stem 53.

It is of importance that the conical valve be held to its seat by a spring-pressure either exceeding or approximately equaling the fluid-pressure within the pipe to which the graphite is delivered. It is found in practice that if the steam or water of condensation inds its way past the valve it will soften up and pass through the graphite unless the latter is firmly impacted. It' the valve is not held to its seat by a strong spring-pressure, it is apt to press a layer of graphite upon the seat, and this is of course subject to the attack of steam or water. The adjustability of the spring-pressure is of value, as it permits the pressure to be regulated correspondingly with the huid-pressure. It not infrequently happens that the duid-pressure is varied from time to time. Should a low pressure be used and the tension of the valve-spring be correspondingly low and then should the Huidpressure be materially increased without increasing the tension of the valve spring, trouble is apt to ensue from the leakage of steam or water past the valve. To obviate this difliculty, it is preferable to adjust the spring to equal the maximum fluid-pressure that may be used.

I claim as my inventionl. In a graphite lubricator, in combination, a reservoir, a barrel into which the reservoir discharges, a plunger reciprocating within the barrel, and means for withdrawing its advance end beyond the opening between the reservoir and barrel, a tube into which the barrel discharges, and a fluid-pipe leading into such tube.

2. In a graphite lubricator, in combination, a reservoir, a barrel into which the reservoir discharges, a plunger reciprocating within the barrel and means for withdrawing its advance end'beyondfthe opening between the reservoir and barrel, a tube into which the barrel discharges, and a conical sp1-in g-closed check-valve at the discharge end of the barrel.

3. In a graphite lubricator, in combination, areservoir, a barrel into which the reservior discharges, a plunger reciprocating within the barrel and means for withdrawing its advance end beyond the opening between the reservoir and the barrel, a tube into which the barrel discharges, a conical spring-closed check-valve at the discharge end of the barrel,

IOO

and a VHuid-pipe leading into the tube at the base of the valve.

4. In agraphite lubricator, in combination, a reservoir, a barrel having a aring mouth leading directly therefrom, a plunger Within the reservoir and reciprocating into and out of the barrel, and means for causing the re- 6. In a graphite lubricatcr, in combination,

a reservoir, a barrel leading directly therefrom, a plunger Within the reservoir and reciprocating into and out of the barrel, means for causing the reciprocation of the plunger,

and a cross-arm on the plunger for agitating the contents of the reservoir, and forcing the Same toward the barrel.

7. In agraphite lubricator, in combination, a reservoir, a barrel leading directly therefrom, a plunger reciprocating vertically Within the reservoir and into and out of the barrel, and a triangular cross-arm carried by the plunger adapted to loosen up the graphite and force it toward the barrel.

8. In a graphite lubricator, in combination, areservoir, a conveying-tube, a barrel in communicaticn with the reservoir and opening into the conveying-tube and being flaring at its outer end, and means for forcing graphite through Ithe barrel.

FREDERICK GIELOV, SR.

Vitnesses:

LOUIS K. GILLsoN, E. M. KLATCHER.

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