US2063352A - Lubricator - Google Patents

Description

Dec. 8, 1936. c. E. STEWART 2,063 ,3 52

LUBRICATOR Filed Aug. 20, 1934 2 Sheets-Sheet l Inventor C/7/ Z9JE Jie 61/ 2 By 5,,

Dec. 8, 1936. v E, STEWART 2,063,352

LUBRI CATOR Filed Aug. 20, 1934 2 Sheets-Sheet 2 lll-flllll' IIIIIIIIIIIIII/ll/II/ &

Attorney Patented Dec. 8, 1936 PATENT OFFICE LUBRICATOR Charles E. Stewart, Verdun, 'Quebec, Canada, assignor to Juno Corporation, Ltd., Montreal,

Quebec, Canada Application August 20, 1934, Serial No. 740,563

6 Claims.

The present invention relates to oil lubricators of the force feed type.

An object of the invention is the provision of a lubricator designed to feed lubricant to reciprocating parts of a mechanism in accordance with the operating speed thereof.

A further object of the invention is the provision of a lubricator designed so that the lubricant fed to a reciprocating member will vary in proportion to the variation in the movement of the said member.

Another object of the invention is the provision of lubricating apparatus having operating means adapted to be connected with and driven by the fluid pressure of reciprocating mechanism to be lubricated by the apparatus.

A still further object of the invention is the provision of a force feed lubricator operable by piston actuated means for automatically lubricating mechanism embodying reciprocating elements.

Still another object of the invention is the provision of a lubricator of the above character which is compact and durable in construction and reliable in operation.

Other objects and advantages of the invention will become apparent as the description progresses.

In the accompanying drawings forming a part of this specification and in which like reference characters are employed to designate corresponding parts throughout the same:

Figure 1 is a side elevational view of a conventional type of air pump showing the lubricating apparatus operatively connected therewith,

Figure 2 is a top plan view of the lubricator,

Figure 3 is a transverse section on the line 3--3 of Figure 2, showing the piston in one position,

Figure 4 is a similar view showing the piston in a reverse position, T

Figure 5 is a vertical transverse section through the lubricant reservoir,

Figure 6 is a similar View showing the eccentric in a difierent adjustment, and

Figure '7 is a longitudinal section through the lubricator illustrating a plural oi1 chamber assembly.

Referring to the drawings, wherein for the purpose of illustration is shown a preferred embodiment of the invention, the numeral in generally designates a vertically elongated chamber having a movable cover H and constituting an oil reservoir.

The chamber [0 provides for bearings in its opposite side walls. On one wall is an opening to receive a bearing, on the opposite wall is an opening through a projecting bearing. Perforated caps screw on the inside bearing and a terminal cap on the outside bearing. A plurality of chambers II] can thus be connected as shown in Figure '7.

At one side of the chamber 10 is mounted a cylinder I2 having ports I3 at each end for connection with fluid conduits. Within the cyl- I inder i2 is mounted a reciprocating piston l5 embodying a pair of spaced complementary disc sections [6 rigidly joined'by a centrally disposed connecting bar I1. The lower edge of the bar is formed with teeth I8 constituting a toothed rack.

A rotary drive shaft extends through the bearings of the walls of the oil chamber l0 and through a recess in the bottom portion of the cylinder I2. Loosely mounted on the shaft 20 within the cylinder is a gear wheel 2| formed ment with the teeth of the ratchet wheel.

On that portion of the shaft 20 projecting through the oil chamber In is a driving cam 21. This cam is composed of an inner eccentric 28 keyed to the shaft 20 and an outer eccentric 29 adjustably mounted on the inner eccentric 28-:3 and secured thereto by the set screw 34.

By means of these eccentrics 28 and 29 the eccentricity of the cam 21 may be varied from zero to a maximum as shown in Figure 5. An intermediate adjustment is shown in Figure (LL The cam 21 is disposed within and vertically reciprocates an elongated eccentric frame 30 formed with an upwardly projecting guide bar 3| at the top and a downwardly extending plunger 32 at the bottom. The guide bar 3| slides in a groove in a guide frame 33 mounted in the upper portion of the oil chamber.

The plunger 32 is slidably fitted inand functions as a forcer in a pump cylinder 35 in the bottom of the chamber, the cylinder having communication with an outlet 36 projecting through and outwardly of the chamber bottom. Within the cylinder 35 and outlet 36 are mounted spring check valves 31 and 38 providing inlet and discharge control means so that the plunger in con- .pump cylinder;

parts of the compressor. that the piston I5 will be operated at a speed corjunction with the cylinder form a force pump for ejecting the oil from the chamber.

When the lubricator is connected with mechanism embodying reciprocating elements, as for example with an air pump or compressor as shown at Figure 1, a pair of pipes or conduits 40 connect the end outlets l3 of the lubricator cylinder I2 with a cylinder of the air pump. A lubricator'duct 4! connected with the outlet 36 of the oil force pump is directed from one or more of the oil chambers to the lubricating connections on the compressor.

During operation of the compressor the fluid pressure of the cylinder with which the lubricator is connected functions to reciprocate the lubricator piston I5 in synchronism with or simultaneously with the movement of the compressor piston. As the piston l5 moves. in the direction shown by the arrow at Figure 3, it rotates the gear wheel 2| in one direction, without effecting movement of the ratchet. When the piston slides in a reverse direction itrotates the gear wheel in reverse movement at the same time ro- The rotary movement of the shaft 20 through simultaneous rotation of the eccentric 21 will cause vertical sliding movement of the pump plunger 32 within the It will thus be noted that only alternative strokes of the piston l5 actuate the ratchet and the shaft by which the ratchet is keyed so that the operation of the piston imparts an intermittent movement to the shaft and,

By this, operation the oil contained in the chamber or reservoir is automatically fed through the feed pipe 4] to the reciprocating It will also be observed responding to the operative speed of the compressor piston and that oil will besupplied to the compressor directly in accordance with the speed of the moving parts. The pressure in the force pump structure of the lubricator may be varied by adjusting the complementary eccentrics 28 and 29 enabling variation in the stroke of the plunger.

As particularly shown in Figure '7, the apparatus may embody one or any desirable number of oil reservoirs so that different parts of reciprocating mechanism may be lubricated and various types of lubricant may be fed thereto. In such from. the various chambers may be varied by adjustment of the operating eccentrics.

While the lubricator has been shown and described in connection with an air compressor it ..vention herein shown and described is to be taken as a preferred example of the same, and that various changes as to the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. A lubricator comprising an oil chamber, a cylinder, a drive shaft extending through the oil chamber and cylinder, a force .feed pump in the chamber driven through the medium of'the drive shaft and an adjustable cam, a piston operatively cyl-inden'a drive shaft extending through the oil chamber and cylinder, a force feed pump in the chamber'driventhrough the medium of the drive shaft andan adjustable cam, a piston operatively mounted in the cylinder, and means operable by the piston for intermittently driving the shaft. I,

3. A lubricator comprising. an oil chamber, a cylinder, a drive shaft extending through the oil chamber and cylinder, a force feed pump in the chamber driven through the medium of the drive shaft and an adjustable cam,'a piston operatively mounted in the cylinder, and gear and ratchet means operable by the piston for driving the shaft. 4. A lubricator comprising an oil chamber, a cylinder, a drive shaft extending through the oil chamber and cylinder, a force feed pump in the chamber driven through the medium. of .the drive shaft and an adjustable cam, a piston operatively mounted in thecylinder, and gear'and ratchet means in the cylinder operable by the piston for intermittently rotating the shaft.v

5. A lubricator comprising an oil chamber with parallel sides with central bea'rings,.a cylinder secured to the chamber and having .a recess in its lower portion transverse bearings in each side wall or the recess; said transverse bearings being co-axial with the chamber bearings,a drive shaft extending through said central and transverse bearings, a force feed pump in the chamber having a plunger with a yoke, an 'adthe yoke to vary the quantity'of oil discharged by the plunger, a piston in the cylinder, means to reciprocate the piston, and means operable by the pistonfor rotating the drive shaft intermittently.

6. A lubricator. comprising a plurality of oil chambers withparallel sides, having bearings therein adapted to connect the adjoining chambers, a cylinder secured to the end chamber, said recess having transverse bearings in its walls, co-

journalled in these bearings; a force feed pump in .J'ustable cam on the drive shaft' operating in .65 cylinder having a recess in its lower portlon, Sald each chamber each having a plunger with a' operating in each yoke to vary the quantity of oil discharged by the plung'ers, a piston in the cylinder, means to reciprocate the piston, and means CHARLES E. STEWART.

yoke, adjustable cams on the drive shaft one

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