US1192274A

US1192274A - Lubricating-pump.

Info

Publication number: US1192274A
Application number: US9895416A
Authority: US
Inventors: Frederick J Carney
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-05-20
Filing date: 1916-05-20
Publication date: 1916-07-25
Anticipated expiration: 1933-07-25

Description

F. J. CARNEY.

LUBRICATING PUMPx APPLICATION FILED DEC- 3. 1910. RENEWED MAY 20.1916.

1,1 92,274. Patented July 25,1916.

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F. .l. CARNEY.

LUBRICATHVG PUMP.

APPLICATION FILED 050.3.1910. RENEWED MAY 20.1916.

1 1 92,274. Y Patented July 25, 1916.

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v LUBRICATING PUMP.

APPLICATION HLED 050.3. I910. RENEWED MAY 20.19ls.

Patented July 25, 1916.

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FREDERICK J. CARNEY, 0F ERIE, PENNSYLVANIA.

LUBRICATING-PUMP.

Specification of Letters Patent.

Patented July 25, 1916.

Application filed December 3, 1910, Serial No. 595,388. Renewed May 20, 1916. Serial No. 98,954.

To all whom it may concern:

Be it known that I, FREDERICK J. CARNEY, a citizen of the United States of America, residing at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in Lubricating Pumps, of which the following is a specication.

This invention relates to lubricating pumps and it consists in the novel features hereinafter described and claimed.

The invention has for its object to provide a device whereby the oil used for lubricating purposes in air compressors and the like may be used over and over again; the lubricant being conveyed from the compressor to a filtering device from whence it is conveyed by a pump to a lubricating receptacle which in turn feeds the lubricant by gravity to the parts to be lubricated.

Another object of the invention is to rovide a simple, improved and effective In ricating device.

Another object of the invention is to improve the construction of the pump, whereby the lubricant is conveyed from the receiving compartment where the pump is located to the lubricating receptacle.

A further object of the invention is to provide means for the return of the lubricant from the receptacle to the receiving compartment where the pump is located in the event of overfeed by the pump.

A further object of the invention is to provide a simple and improved construction under which the pump shall be operated directly by the action of the compressor in connection with which the device is used. A further object of the invention is to provide simple and effective means for governing the stroke of the pump.

With these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the inventiomit being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modificaa compartment B into which the lubricant receptacle,

tions within the scope of the claims resorted to when desired.

In the drawings,-Figure 1 is an end elevation of an air compressor equipped with the improved lubricating device. Fig. 2 is a vertical sectional view enlarged taken through the lubricating device, on the plane indicated by the line 2-2 in Fig. 1. Fig. 3 is a vertical sectional view taken through the pump on the plane indicated by the line 33 in Fig. 2.

Corresponding parts in the several figures are denoted by like characters of reference.

The oil box or casing A, which is equipped with a detachable lid A contains used oil from the compressor is conveyed through one of the openings 4 or 5, the other opening being meanwhile obstructed by a plug or stopper of suitable construction. The compartment B within the oil box A supports a filtering pan C which may be secured in position by suitable fastening means, such as bolts or screws 6. The pan contains filtering material such as loosely packed wool which is held in place by means of screens 7 of proper mesh. A screen 8 of angular or undulating form is placed midway in the filtering pan, said screen constituting a partition which permits a portion'of the filtering material to be removed and renewed without disturbing the rest. A washer 9 of felt or other suitable material is placed beneath the filtering pan may be to prevent undue leakage of oil from the chamber B into the chamber D which is located adjacent to the chamber B, before passing through the filtering pan C.

A pump E of special construction, which will be presently more fully described, is located within the chamber D for the pur pose of raising the filtered oil from said chamber to the oil chamber or receptacle F. The latter is constructed preferably of a glass cylinder having top and bottom members G and H, the former of which is provided with an inlet plug 10. The bottom member H has a downwardly extending boss 11 which is connected by a pipe 12 with a chamber 13 formed in a projection 14 upon the casing A. The bottom member H also has an upwardly extending boss 15 provided with apertures 16 opening into the Threaded into the boss and extending downwardly through the pipe 12 is an internal pipe 17, the lower 'end of which communicates with the com partment D of the oil box A through a duct or channel 18, the flow through which may be regulated by a valve plug 19. The upper end of the pipe 17 is connected by a coupling 20 with a tubular member 21 that extends through the top member G and has a head 22 bearing upon said top member which is thus assembled with the bottom member H and with the tubular glass 23 v constituting the body of the lubricant recep- V partment D tacle. The tubular member 21 is provided with apertures 21 opening into the lubricant receptacle directly beneath the top member G, thus permitting the contents of the receptacle when it rises to a certain stage to return to the compartment D of the oil box through the tubes 21, 17 and the port 18.

The external connecting tube 12 is connected by one or more pipes or ducts, as shown at 25, with various points to be lubricated on the compressor K to which oil will be fed by gravity or force feed, as may be desired.

The pump of the oil box A, includes a in whicha piston 27 is arranged upcylinder 26 for reciprocation. The piston is moved w-ardly and held in a raised position by the action of a spring 28. Said spring is coiled about a stop member 29 which limits and determines the extent of the downward movement of the piston. The latter is pro,

vided at either end wlth suitable washers 30 to insure a tight fit in the cylinder. The

cylinder is provided at its upper end with a cap 31 having a port 32 and a union 33 serving to make fast the tubing or duct 34:, whereby the pump cylinder is connected with a convenient point of the cylinder of the compressor. The lower cap 35 of the pump cylinder contains besides the stop 29 the upwardly and downwardly opening

ports

36, 37 having valve seats, and equipped .7 with

ball valves

38, 39, the upward moveconsisting of cross bars 10.

37 communicates with ments of which are limited by stop members The downwardly opening port the interior of the compartment D of the oil box A, while the upwardly opening port 36 is connected by a duct 411 with the chamber 13 communicating with the lower end of the external oil pipe 12.

In the operation of this device, the used oil is conveyed from the compressor by the pipe 1, see Fig. 1, to the compartment B of the oil box. From this compartment it passes through the filtering device C to the compartment D from which the 'pump E forces it into the oil reservoir F.

The operation of the pump E is as follows: As the piston of the air cylinder of the compressor moves and travels on its return stroke,

27 expands, and the spring 28 E, which is located in the comconstitutes a gravity feeding device. reservoir also constitutes a storage chamber its connections.

tamed 1n the top of the oil reservoir which toward the end of upward to the oil reservoir F. WVhen the.

piston of the compressor cylinder reverses of the piston then forces the piston 27 in an upward 1- rection. The check valve 38 comes to its seat and obstructs the backward flow of oil to the pump check .valve 39 is lifted from its seat, and another volume of oil enters the pump. Thus it will be seen that the downward movement of the piston 27 is causedby the compression within the compressor cylinder, while the upward movementof the piston is caused by the expansion of the air back of the piston assisted by the pressure of the spring 28, and the resultant reciprocating motion of the piston serves to force the oil to the reservoir F. V

The volume, of the oil, and the force of its delivery, may be controlled by the valve plug 19, and an auxiliary controlling valve 41 may be provided upon the duct 41.

It will be observed that by the use of this invention the lubricatingoil afterbeing used passes to the oil box where it is filtered and purified, after which it is forced by the pump to the oil receptacle or reservoir which which, in the event of accident to the pump,

will maintain the supply of lubricant for a considerable period. The stroke of the pump piston which governs the quantity of oil that is forced by the pump to the reservoir at each pulsation ofthe pump in order tomaintain the supply in said reservoir is limited in an upward direction by the cap 31 and in a downward direction by the stop member or buffer 29, which latter is to be of a predetermined length to properly regulate the stroke of the piston. In the event of overfeed, however, the surplus is returned to the oil box A through the internal pipe 17 and An air space is also mainlimits pulsations due to the pump and .glves an even pressure to the flow of oil.

While, in the foregoing, this invention has been described as being mainly applica that the invention may applied to other uses which will readily suggest themselves. 1 V Having thus described the invention, what is claimed as new, is:

1. A pump adapted to be automatically operated by the rise and fall of the pressure the air back from the reservoir F, while the Said T ble to air compressors, it is to be understood be advantageously Within the compressor cylinder of an air compressor comprising a cylinder provided at one end with means for leading fluid pressures therein from the compressor, a cap closing the opposite end of the cylinder and adapted to rest upon a support and having a bore of the same diameter as that through the cylinder, said cap being provided at its side with a port which communicates with the interior of the cylinder, a piston slidably mounted in the cylinder and a spring interposed between the cap and the piston and being under tension with a tendency to hold the piston toward the pressure inlet end of the cylinder.

pump adapted to be automatically operated by the rise and fall of the pressure Within the compressor cylinder of an air compressor comprising a cylinder provided at one end with means for leading fluid pressuretherein from the compressor, a cap clos- Gopies of this patent may be obtained for five cents each, by addressing the ing the opposite end of the cylinder and having a bore of the same diameter as that through the cylinder, said cap being provided at its side with a port, a stop located FREDERICK J. CARNEY.

Witnesses:

JAMES N. ALLBunN, MILES B. Krrrs.

Commissioner of Patents,

Washington, D. O.