US1078320A - Pump. - Google Patents

Description

J. M. STRATTUN.

PUMP. APPLIOATION FILED APR. 1s, 1913.

Patented Nov. 11, 1913.

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JAMES M. STBATTON, OF SALEM, OHIO, ASSIGNOR, TO THE IDEMING COMPANY, OF SALEM, OHIO, A CORPORATION OF OHIO.

PUMP.

Lorenzo.

Specification of Letters Patent.

Patented Nov. 1 1, 1913.

Application inea April 16, 1913. serial No. 761,509.

To all whom, t vmay concern Be it known that I, JAMES M. STRATTON, a citizenof the United States, residing at Salem, in the county of Columbiana and State of Ohio, have invented certain new and useful Improvements in Pumps;and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable ot-hers skilled in the art to which it appertains to make and use the same.

My invention relates .to pumps and is capable of general use for lifting water or other liquids, but is designed more especially for use as a gasolene pump in the garage, where not only prompt and eflicient action is at all times required, but protection from waste, and from fire are very important considerations.

To the accomplishment of these results primarily my present invention is directed, and it consists moreover, in the structural arrangement and combination of parts' whereby they are obtainable.

It is quite customary in well appointed garages to store no gasolene Within the structure, but rather in a suitablel tank, buried, preferably, below the frost line, in the ground adjacent to the building, a suitable supply pipeA being employed to connect such tank with a pump Within the garage. Even under these approved conditions, however, it is advisable that no gasolene be permitted to stand'within the pump barrel when not in use, or in the riser pipe leading thereto, not only because of the possibility of leakage and waste but also because of the fire risk, and accordingly the present pump has been designed and arranged to automatically clear itself after use, all unused gasolene flowing back into the tank from whence it came.

The invention will be hereinafter particularly described and pointed out in the claims following. i

ln the accompanying drawings which form part of this application for Letters Patent, and whereon corresponding numerals refer to like parts in the several views: Figure 1 is a side elevation of pump, showing also means for locking its handle in` its lowermost or depressed position` Fig. 2 iS a vertical central section through the lower end of pump cylinder, its valve mechanism, and supporting base, and Fig. 3 is a detailed fragmentary view of the slotted pump handle at one end.

Reference being had to the drawings and numerals thereon, 1 indicates the pump cylinder, preferably of brass to prevent corrosion. To the lower end of this cylinder 1 is joined by screw threaded connection a cast bottom-attachmentJ 2 surrounded by a two-part cast base 3 secured by means of bolts 4, 4, while entering the lower extremity of said bottom-attachment 2 is a riser or supply pipe screw threaded at its upper end.

Within the bottomattachment 2 is a valve seat 6 perforated by suitable inlet ports 7, 7 between which is a central boss 8 broken by a circular perforation 9, the latter serving as a guide for the loosely fitted stem 10 of an auxiliary vent valve 11. This vent valve 11 is arranged and adapted when seated to engage the under surface of said boss 8 thereby closing the clearance space 9 around stem 10, and is lfitted at its upper end with a surrounding collar 12.

Covering the inlet ports 7, 7 is a circular lower valve 13, which, however, differs from ordinary valves for similar purposes, in so faras it is provided, like boss 8, with acentral perforation 14 through which the auxiliary vent valve stem 10 loosely passes. Surrounding this stem 10 and resting upon the upper surface of the lowerl valve l13, between same and collar 12 upon the said stem, is a relatively light coil spring 15 which normally keeps the vent valve 11 seated or closed.

Surrounding the upper end of the pump cylinder 1 is a cast upper attachment 16 provided with a suitable stuffing box 17 of the nut and gland type, and provided further with a hand-lever stop-cock or discharge outlet 18, preferably equipped with a hose thread, while opposite this are a pair of projecting lugs 19 between which is pivotally secured a vertically movable locking bar 20 as will be seen by Fig. 1 of the drawings.

Projecting upward through stuffing box 17 is a pump plunger rod 21 surmounted by a spade handle grip 22 slotted at each end as best shown at 23 in detail Fig. 3, either of said slots being arranged and adapted to receive the upper end of locking bar 20 when elevated to the position indicated by Fig. 1 for the purpose of securing the pump against unauthorized use, by agency of the shackle of an ordinary padlock 2-1- passing through an eye 25 at the end of said bar 20. At its lower end the plunger rod 21 is secured to an ordinary plunger case 26, into the interior of which from below is screwed a flanged follower' 27; between the flange of this follower 27'. and the lower edge of cage 26 is secured a cupped plunger packing 28 which packing therefore is at all times caused to hug closely the interior of cylinder 1. Immediately above follower 27 and within the confines of cage 26 is a vplunger valve 29 which is free to reciprocate vertically at all times except when the pump plunger is depressed to its extreme lowermost position as illustrated, for purposes hereinafter to appear.

This being a description of the present invention, and an embodiment thereof in its best form of construction at present known to me, I will now proceed to describe its use and operation; but in so doing it is deemed unnecessary to set forththe well understood operation of valves 29and 13 the co-action whereof does not materially differ from lifting pumps in general. Except it may here be noted that the normal position of auxiliary vent valve 11, when the pump is in service, is the reverse of that illustrated by Fig. 2 of the drawings, being normally upheld by the action of spring 15 and consequentlyl seated upon the under side of boss 8 to close the central perforations or drain ports 9 and 14;. After the pumping operation, however, when it is desired to effectually drain the pump and its supply pipe of gasolene, or other liquids which may have been pumped, it is only necessary to depress plunger rod 21 to its fullest extent as indicated by Fig. 1 of the drawings. Obviously, when follower 27 descends with rod 21, its upper edge, constituting a seat for plunger valve 29, recedes from the latter leaving it relatively elevated as shown by Fig. 2, whereuponl any further downward movement of said rod 2l,

acting through plunger valve 29 and underlying stem 10, must of necessity unseat the auxiliary vent valve 11. In this manner all gasolene, or other liquids, entrapped above the lower pump valve 13 is permitted to freely flow through central perforations or drain ports 14 and 9, to and through the suction-or supply pipe 5, thus promptly clearing the pump, which, it may beadded does not subsequently require priming for the reason that there is, as shown, a minimum of clearance between its cylinder 1 and the moving parts. After draining as deing is eliminated.

scribed, with its handle 22 occupying the position indicated by Fig. 1, locking bar 20 may be elevated until itenters one or the other of the end slots 23, in which position it may be secured by means of a padlock as shown, thereby positively preventing the possibility of unauthorized Aor wasteful use of the pump, as well as reducing to a minimumA the lire risks in a garage or other building in which the pump may be located.

lVhile the foregoing description relates primarily to a gasolene pump it is quite evident that the invention is equally applicable to pumps for lifting other liquids of whatever character; and when, for example, used in pumping water from a deep well or cist-ern or from a tank buried belowl the frost line it is quite obvious that all risk of freez- Having thus described my invention what I now claim and desire tol secure by Letters Patent is:

l. In a valve mechanism for pumps the combination with a lower valve provided with a drain port therethrough, of a spring seated auxiliary valve normally closing said port, an auxiliary valve stem projecting loosely through said drain port, and means under contro-l of the pump plunger rod for depressing said auxiliary valve stem and unseating its valve when occasion requires.

2. In a valve mechanism for pumps the combination with a lower valve providedwith a drain port-therethrough, vof an auxiliary spring seated vent valve normally closing the underside of said port, an auxiliary valve stem projecting upward through said port, and a plunger rod adapted to depress said stem to open the vent valve.

3. In a valve mechanism for pumps the combination with a plunger valve and a lower pump valve the latter provided with a drain port therethrough, of an auxiliary vent valve normally closing the underside of said port,an auxiliary valve stem projecting upward through said port, and means under control of the pump plunger .rod for simultaneously opening said plunger valve and vent valve. f

4. In a pump the combination with a suitable cylinder, of a plunger rod, a plunger cage aiiixed to said rod, suitable packing between said cage and cylinder, -a valve seat and plunger valve within said cage, a lower pump valve and valve seat, a drain port through said lower valve and seat, an auxiliary vent valve normally closing said drain ports having a stem projecting upward therethrough and adapted to be depressed by an abnormal thrust of the pump plunger rod to simultaneously unseat said plunger valve and vent valve.

5. In a pump the combination with a cylinder and a vertically movable plunger rod having a spade handle slotted at its ends, of Intestimony whereof I ax myeeignature,

a locking bar pivotally mounted upon said. in presence of two subscribing Witnesses.

cylinder having an eye at one end adapted to be projected through one of said handle JAMES M STRATTON slots, and a suitable lock for engaging the Witnesses: eye aforesaid to removably retain. said bar H. W. YOUNG, and handle in locked relation. J. Bl GARBER.

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