US1771690A - Valve trip - Google Patents

Description

Patented July 29, 1930 UNITED rares OFFICE f AUSTIN H. RANKIN, OF STOY, ILLINOIS VALVE 'reir Application filed.V May 18,

operator,-the valves specified may be held open, to permit a washing out of the valve seats by the oil or other liquid which is standing in the well, and to provide a means whereby the aforesaid valves may .be opened for any purpose whatsoever, connected with the operation and maintenance of oil or other wells.

It is within the province of the "disclosure 2o to improve generally and to enhance the utility of devices of thatsort to which the invention appertains.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter set forth, it being understood that changes may be made in the precise embodiment of theinvention, within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings:

Figure 1 shows in longitudinall section, a device constructed in accordance with the invention, parts ybeing in elevation;

Figure 2 is an enlarged longitudinal sectional detail;

Figure 3 is a transverse section on the line 8-3 of Figure 1;

Figure 4 is a section on the line 4-4 of Figure 1;

Figure 5 is a section on the line 5-5 of Figure 1.

The numeral 1 marks a tubular plunger of the kind used in the deep wells, and, generally, in oil wells. The plunger 1 isA packed in any suitable way, as shown at 2, to fit closely but slidably in a barrel 3. A cage 4 is threaded or secured otherwise upon the upper end of the plunger 1, and within the cage 4 is located 192e. serial No; 364,232.

a ball valve 5 which seats on the upper end i of the plunger 1. The operating means is vdisclosed in the form of a pump rod 6 at tached to the cage 4. The cage 4 has longitudinal slots 7 which open upwardly through the upper end of the cage4 and permit the upward passage of liquid when the ball valve 5 is raised.

A foot valve casing 8 is mounted in the lower end of the barrel 3. A cage 9 is threaded or secured otherwise on the upper end of the foot'valve casing 8 and is spaced from the inner surface of the barrel 3. VThe cage 9 has longitudinal slots or guides 10 extended through the upper end of the cage 9. The cage 9 has a downwardly and inwardly inclined surface 1()a located at the lower end of one of the slots 10.

l An upstanding tubular finger 11 is mount-- ed at its lower end in the top of the cage 9.

y ing a head 12 mounted to slide on the finger 11, .thevhead 12 of the displacer carrying short arms 14, and along arm 15, the arms 14 and 15 being received slidably in the guide slots 10 of the cage 9. A compressionspring 17 surrounds a portion of the linger 11 and is interposed between the top of the cage 9 and the head 12 of the displacer, the upward movement'of the displacer, under the action L of the yspring 17, being limited, because the short arms 14 have projections 16 which engage beneath the top of the cage 9. The long arm 15 of the displace'r has an inwardly eX- ltended part 18 adapted toride on the inclined surface 10a ofthe member 9 and spring inwardly, thereby to displace a bail valve 19 located within the cage 9 and seated in the cage.

In practical operation, the plunger 1 can spring 17 being compressed.

make a pumping stroke in the usual way, the valves 19 and 5 operating in a manner well understood by those skilled in the art. In the event that it is desired to displace the valves 5 and 19, then the plunger 1 is lowered until it rests upon the top Yof the displacer, the displacer moving downwardly and the When the displacer moves downwardly, the finger 15 rides along the inclined surface 10a of the cage 9 and springs inwardly, the long iinger 15 having some resiliency. Vhen the finger 15 springs inwardly, the ball valve 19 is displaced. When the plunger is moved downwardly, as and for the purpose specified, the upper end of the finger 11 ultimately comes intocontact with the ball valve 5, and the ball valve 5 is unseated at the same time that the ball valve 19 is unseated.

When the operator wishes to pull the plunger 1 out of the barrel 3, he raises the plunger until the shoulder 11b is caught on the lower end 11c of the plunger 1, and, then, the foot valve can be pulled out or" the well along with the working valve and the plunger 1.

Having thus described the invention, what is claimed is:-V

In a device of the class described, a foot valve casing having guide grooves and provided with a downwardly and inwardly inclined surface at the base of one of the grooves, a ball valve seated in the casino` l u n `a displacer including long and short arms slidable in the grooves, the long arm being of such length as to ride along the said inclined surface of the casing, move inwardly, and unseat the ball valve laterally, when the displacer moves downwardly, the long arm being thick enough, and the diameter of the ball valve being such, compared with the internal diameter of the valve casing, that the long arm cannot ride over the surface of the valve, and seat under the valve, spring means for holding the displacer yieldably against downward movement, the short arms leaving the corresponding grooves open at their lower ends when the displacer is raised by said spring means, a stem mounted on the dis* Y placer, a plunger slidable on the stem, a valve carried by the plunger and located in the path of the stem, so as to be unseated by the stem when the plunger moves downwardly upon the displacer to depress the ldisplacer and unseat the first-specified valve, the stem having a shoulder which, engaging the lower end of the plunger, enables the foot valve casing to be pulled, along with theplunger.

In testimony that claim the foregoing as my own, I have hereto aliixed my signature AUSTIN H. RANKIN.

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