US1252875A - Pump. - Google Patents

Description

H. W. ASHMU SEN.

PUMP.

APPLlCATlON FILED MAR- 29,1916.

1,252,875 Patented Jan. 8,1918.

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HENRY W. ASI-IMUSEN, OF KINGS PARK, NEW YORK, ASSIGNOB T0 ASI-IMUSEN MANU- FACTURING COMPANY, OF KINGS PARK, LONG ISLAND, NEW YORK.

PUMP.

Specification of Letters Patent.

Patented Jan. 8, 1918.

Application filed March 29, 1916. Serial No. 87,572.

To all whom it may concern:

Be it known that I, HENRY WV. AsH- MUSEN, a citizen of the United States, residing at Kings Park, Long Island, in the county of Suffolk and State of New York, have invented certain new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to fluid pumps and is intended more particularly for use in forcing lubricant to various parts of a machine although it is capable of use in other fields. The object of the invention is to pro vide a simple and eflicient mechanism whereby a single valve will control all the inlets and outlets and the lubricant will be driven through the outlets by independent plungers.

This stated object and other incidental objects which will appear as the description of the invention proceeds are attained in mechanism of the character illustrated in the accompanying drawing and the invention resides in certain novel features which will be particularly pointed out in the claims following the description.

In the drawing,

Figure 1 is a vertical sectional view of an apparatus embodying my present invention;

Fig. 2 is a horizontal section on the line 22 of Fig. l.

In carrying out my invention, Iemploy a casing 1 which may be of any desired configuration and is shown provided with an inlet 2 which may be connected with any convenient tank or source of supply. The inlet is preferably in the form of a pipe having a threaded connection with the wall of the casing and communicates directly with an annular chamber 3 formed in the casing, as will be readily understood. The casing is further provided with a plurality of outlet ports l from each of which a pipe 5 leads to a bearing or other part to be lubricated. Within the casing or housing 1 is mounted a valve 6 which may slide, or turn, in the casing and is constructed with a plurality of ports 7 corresponding in number, size and relative position with the outlet ports 4 and arranged to each register with one of said ports when in the discharging position. Each of the ports 7 communicates at its innor end with a chamber 8 formed in the valve and adapted to serve as a temporary reservoir or fluid-holding receptacle and in each of said chambers or receptacles is slidably mounted a plunger 9 having its outer end freely supported by a cross bar or radial arm 10 fixed upon the driving rod 11. This driving rod 11, in the illustrated embodiment of the invention, has its lower end frictionally engaged within a central bore 12 of the valve and is longitudinally split, as shown at 13, whereby the branches of the rod will engage the wall of the bore 12 so as to impart movement to the valve but be capable of movement independently thereof. The valve is limited in its movements in the illustrated arrangement by internal stops or annular shoulders 14 provided on glands 15 fitted in the upper and lower ends of the casing and holding packing against the sides of the valve so as to prevent leakage. The plungers 9 also play through glands or packing boxes 16 and the upper ends of the plungers are reduced, as shown at 17, to pass freely through openings in the support 10. Above the support, nuts 18 are mounted upon the said stems l7 and are turned home against the support 10 so as to limit the movement of the plungers and thereby regulate the operation of the same, as will be readily understood.

In the present drawing, I have illustrated a reciprocating valve, but it is to be understood that the particular movement of the valve is capable of variation. IVith the valve in the position shown in Fig. 1, lubricant will flow from the annular chamber 3 through the several ports 7 into the receptacles 8 below the plungers 9. W hen the driving rod 11 descends the frictional engagement of said rod with the valve will cause the valve to descend until. it strikes the lower stop 14 whereupon the continued movement of the driving rod will cause the said rod to slip longitudinally with respect to the valve and carry the plungers toward or to the lower ends of the respective chainbers 8, thereby expelling the lubricant through the ports 7 and the outlet ports 4;, it being understood, of course, that the stops or shoulders 14 will be so disposed that, when the valve is in contact with the lower stop, its ports will register with, the ports 4E and when the valve is in contact with the upper stop the ports 7 will be above the lower edge of the chamber 3. Upon the return movement of the driving rod 11 the frictional engagement of the rod With the valve will lift the valve until its motion is arrested by the upper stop 14: and the rod will then continue its travel for a short additional distance and thereby lift the plungers 9 within the chambers 8 so as to uncover the ports 7 and permit lubricant to again fiow into said chambers.

My improved device Will be found especially useful in lubricating machinery having a large number of bearings,as it will be entirely automatic in its operation inasmuch as it may have the driving rod 11 coupled to the driving shaft of the machinery so that the pump will operate whenever the machinery is operating and will be at rest when the machinery is at rest so that the lubricant will be supplied constantly to the bearings when it is needed and when it is not needed will be cut off so that there will be no waste. It will be readily understood that if the upper end of a plunger 9 is adjusted close to the support 10 said plunger will have a very limited play independently of the plunger rod or driving rod and, consequently, when the plunger rod is'raised the plunger will rise to nearly the full limit of movement so that a larger quantity of oil may enter the receptacle below said plunger. It will thus be seen that the plungers may be easily adjusted so as to regulate the quantity of lubricant driven out through the several outlet ports. In some cases, it is found that the adjustable mounting of the plungers is made unnecessary by varying the diameter and consequent capacity of the various chambers 8 according to the requirements of the bearings they are to respectively supply. It will be understood, of course, that the number of oil-receiving chambers may be varied to meet any demands and that other changes may be made in the details of construction and arrangement without involving a departure from the spirit or scope of the invention as the same is defined in the appended claims. The driving rod may move the valve positively through a lostmotion connection which will permit a limited movement of the rod independently of the valve andwhich will eliminate the wear due to frictional engagement of the parts. The valve may be one integral structure as illustrated or it may be composed of sections held apart and to the casing by springs or similar devices and each containing one or more oil chambers or receptacles.

Having thus described the invention, what is claimed as new is:

1. A pump comprising a casing having an of the valve, a plunger within the chamber 7 in the valve, and means for moving the valve in the casing and also moving the plunger Within the valve. 7

2; A pump comprising a casing having an inlet and an outlet, a valve mounted within the casing and provided with a port adapted to register with the inlet or the outlet and having a chamber in communication with said port, a plunger slidably fitted within said chamber, a driving rod having a lostmotion connection with the valve-to move the same within the casing and also having a lost-motion connection with the plunger to move the plunger within the valve, and means for positively limiting the movement of the valve.

3. In a pump, a valve movable between receiving and discharging positions, a plurality of pump elements, and means for first moving the valve in one direction or another to assume one or another of said positions and subsequenty actuating the pump elements, upon continued movement in the same direction to cause functioning thereof in correspondence with the position of the valve.

4:. In a pump, a valve movable between receiving and discharging positions and having a plurality of chambers arranged to receive and discharge fiuid when the valve is respectively in receiving and discharging positions, a plunger Working in each chamber,

and means for first movingthe valve in one direction or another to assume one or another of said positions and subsequently moving the plungers in the same direction to cause functioning thereofin correspondence with the position of the valve.

5. In a pump, a valve movable between receiving and discharging positions and having a plurality of chambers arranged to receive and discharge fluid when the valve is respectively in receiving and discharging positions, a plunger working in each chamber, actuating means common to the valve and plungers and operable to first move the valve to one or another of said positions and subsequently move the plunger-s in the same direction to cause functioning thereof in correspondence with the position of the valve, and means for arresting the movement of the valve when the same has assumed either of its positions.

(3. In a pump, a valve movable between receiving and discharging positions and having a plurality of chambers arranged to receive and discharge fluid when the valve is respectively in receiving and discharging positions, means for positively arresting the movement of the valve upon reaching either of said positions, a driving element frictionally coacting with the valve to move the same between said positions and movable independently of the valve when the movement of the valve is arrested, .a plunger working in each of said chambers, and operative connection between the plungers and the said driving element.

In testimony whereof I aflix my signature.

HENRY W. ASHMUSEN. 1,. 5.

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

Washington, D. G.

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