US1523142A - Pump hanger - Google Patents

Description

PUMP HANGER Filed Sept. 19, 1925 2 Sheets-Sheet 1 Jan, 13,

11,523,142 5. B. SARGENT PUMP HANGER Filed Sept. 19, 1925 2 Sheets-Sheet 2 I III IH'II HI Patented Jan. 13, 1925.

@NHTE a SUMNER B. SARGEN'I', 0F HUNTINGTON PARli, CALIFORNIA.

PUMP HANGER.

Application filed September 19, 1923. Serial No. 663,572.

To all whom it may canoe m:

Be it known that I, SUMNER B. SARGENT, a citizen of the United States, residing at Huntington Park, in the county of Los Angeles and State of California, have invented a new and useful Im rovement in Pump Hangers, of which the fbllowing is a specification.

This invention relates to mechanism for connecting a walking beam or other operating member to a polish rod clamp for producing operation of a well pump, and an object of the invention, in general, is to provide for adjustment between the walking beam and polish rod so that the stretch of the sucker rods can be compensated for.

Another object is to provide for automatic release if part of the hanger mechanism should break while in use, thus avoiding injury to the polish rod, hanger or other parts.

Another object is to facilitate the employment of cables or rods, at the option of the operator, for connecting the polish rod clamp to the walking beam.

Other objects and advantages Will appear in the subjoined detailed description.

The accompanying drawings illustrate the invention:

Figure 1 is a side elevation of a pump hanger embodying the invention, a walking beam and Samson post also being shown.

Fig. 2 is an elevation from the right of Figure 1.

Fig. 3 is an enlarged side elevation of one of the links, a fragment of one of the rods anal the nut for connecting the link and r0 Fig. 4 is an edgeview of Fig. 3 from the left thereof. Fig. 5 is a plan section on the line indicated by 5-5, Figure 3.

Fig. 6 is an enlarged fragmental lan view, partly in section, from the line mdicated y 66, Figure 2.

Fig. is a sectlonal elevation on the line indicated by 77, Figure 6.

Fig. 8 is a fragmental elevation of a modified construction for connectin the pivotally suspended arm with the r s.

Fig. 9 is a side elevation of Figure 8.

Fig. 10 is a plan section cated by 10-10, Figure 8.

Fig. 11 is a fragmental section on the line indicated by 11-11, Figure 8.

First referring to the construction illustrated in Figures 1 to 7 of the drawings, an operating member to which the pump hanger connects is indicated at a, being, in this instance, a walking beam fulcrumed at b on a Samson post 0. The walking beam a is provided with the usual slot in its end to accommodate an arm 8, that is provided with a bearing 9 through which projects a shaft 10. The shaft 10 is mounted at its opposite ends in boxes 11 which are secured by lag bolts 12, or other' suitable devices, upon the upper face of the walking eam, a, on .opposite sides of the slot (1. Thus the arm 8 is pivotally suspended from the walking beam.

The lower end of the arm 8 is provided with an eye 13, the lower wall of said eye being arcuate or upwardly convex on the inside as indicated at 14. Engaging the arcuate portion 14 is a cross arm 15 which has an arcuate recess 16 fitting the arcuate portion 14. Thus the cross arm is tiltably mounted on the arm 8.

The cross arm 15 is held assembled with the arm 8 by a bolt 17 which extends transversely of the eye 18 a slight distance above the cross arm, the distance being just sufficient to permit of tilting of the cross arm with respect to the arm 8. The bolt 17 also engages and supports within the eye 13 a latch member 18, the upper face of which seats against the upper wall of the eye.

The latch member 18 is releasably engaged by a pair of oppositely arranged latch members 19, which, in turn, engage the outer faces of nuts 20 screw-threaded on rods 21 that are accommodated in slots 22 in the opposite ends of the cross arm 15. The connection between the latch members 18, 19, in this instance, is constituted by sockets 23 in the latch member 18 and lugs 24 projecting from the latch members 19 into said sockets, as clearly shown in Figure 7. The outer ends of the latch members 19 are slotted at 25 to accommodate the upper on the line indiends of the rods 21. The latch members I one form of devices that may be employed to engage the rods and slots on the cross 7 arm.

Though not absolutely necessary, it is advisable to hold the latch members 19 toward the nuts 20 to insure against jarring loose of the latch members 19 from the nuts 20. Any suitable means may be provided for this purpose and, in this instance, the rods 21 are provided above the latch members 19 with nuts 27 and between the nuts 27 and latch members 19' with'coil springs 28 that press upon the latch members 19 to yieldingly hold them in engagement with the nuts 20. Thus the latch members 19 are loosely connected with the nuts 20 and the advantage of this will appear hereinafter.

The lower ends of the rods 21 are screwthreadedinto split nuts 29 which are accommodated in links 30, upward and downward movement of the nuts be'ng limited, respectivel by upper shoulders 31 and lower shoulders 32 in the link. The side walls of the links prevent turning of the nuts 29. The nuts 29 are clamped upon the rods 21 ,by' bolts 33 which are positioned transversely to the split 34 in the nuts. The nuts 20 and upper ends of the rods 21 have their screw-threads the reverse of the screwthreads of the nuts 29 and lower ends of the rods, so that the rods and nuts together constitute, in efiect, turn buckles, adjustment occurring simultaneously at both ends of each rod as the rod is-turned.

' The upper ends of the links 30 are formed with tubular ortions 35 through which the rods 21 extend. The lower ends of the links constitute bearings 36' to receive the opposite ends of a bar 37, there being cotter pins 38 extending transversely through the bar 37 to prevent said bar from pulling out of the links. The bar 37 is for the purpose of supporting the polish rod clamp, not shown.

From the foregoing it will be clear that the latches 18, 19 connect the arm 8 to the rod engaging devices 20 when the cross arm is approximately horizontal, and that one of the latches is released by tilting of the cross arm to release the associated rod-engaging device and permit it to-slide from the cross arm.

The upper end of the arm 8 is provided with an eye 39 above the bearing 9 so that the arm can be readily engaged by a tackle hook when it is desired to raise the pump hanger higher than the walking beam can lift it. p

Assuming that the pump hanger is con- 15. The nuts 20 constitute its lug the unbroken rod, and when this occurs the outer end of the cooperating latch member 19 will also tilt downwardly, thus prying 24 out of the cooperating socket 23 and releasing the latch. When the latch member 19' is thus released, it will be clear that the associated nut 20 will slide off of the cross arm 15, thus disconnecting said cross arm from the polish rod and the operation of the polish rod will then cease.

This will avoid any injury to the pumping apparatus that might otherwise be caused by continued more or less eccentrically as would result if the cross arm 15 and bar 37 were not entirely disconnected. Y

.When it is desired to employ cables between the arm 8 and the polish rod, instead of the rods 21 and the other parts cooperat-' ing with said rods, the bolt 17 will be rereciprocation of the polish rod Q moved and the cross arm 15 will then be 1 taken oli with all of its cooperating parts, anda suitable cable or cables, not shown, will be rove through the eye 13 so that the bight of the cable will rest upon the arcuate portion M. The lower ends of the cables may be connected with the polish rod clamp by any suitable means, one form of such means being disclosed in my copending application for patent filed Sept. 19, 1923, Serial No. 663,571.

Other suitable means-than those described above may be employed for connecting the opposite ends of the cross arm to a polish rod clamp and other devices than the latches and nuts 20 may be used within the scope of some of-the appended claims without jdeparting from the spirit of the invention.

Instead of the means described above for connecting the walking beam to the rods, there may be employed the modified construction illustrated in Figures 8 to 11, inclusive. In .the illustrations of the modified construction, those parts that are functionally the same as those previously described herein will be indicated by the same reference characters with the addition of an index letter a. The arm 8 is provided with the eye 13 of which the lower end wall is arcuate at 1 1 so that, if desired, the cross arm 15 may be employed the sanle as with the arm 8 or the bight of the cable may rest upon the arcuate portion, as previously referred to. The rods are indicated at- 21"" and adjustably engage nuts 20 which are provided with laterally extending abutments 42, that are circular in cross section in this instance, and that seat upon the tips of a cross arm or cross arms 15. The nuts 20 and their abutments 42 constitute one form of devices engaging the rods and slidably mounted on the end portions of the cross arms. The cross arms 15 are mounted on the opposite ends of a shaft 48 which extends through a bearing 40 at the lower end of the eye 13", the top of said bearing constituting the arcuate portion 14. The cross arms 15 are fixed by pins 41 .or otherwise to the shaft 48 and bv said shaft are fulcrumed or t-iltably mounted on the arm 8. The shaft 48 is free to turn in the bearing 40 but, normally, the cross arms 15 are in horizontal position because of the rods 21 pulling equally on opposite ends of the cross arms.

To prevent the abutments 42 from sliding off the cross arms, when the cross arms are approximately horizontal, there is provided an arcuate member 43 extending through the e e 13 and mounted on a pin 44 that extends transversely of the eye, the opposite ends of the arcuate member 43 constituting latch members and being positioned to engage the outer faces of the abutments 42 which thus constitute other latch members that cooperate with the first latch members 43. The under face of the arcuate member 43 is an arc whose radius is struck from the axis of the shaft 48. To prevent oscillation of the arcuate member 43 about the axis of the in 44, said arcuate. member is provided with an upwardly extending ear 45 having a notch 46 in its upper end, and engaging in said notch is an abutment 47 progecting from the upper end wall of the eye 13. I

lVith the construction just described, it will be readily understood that breaking of one of the rods 21 will permit all of the weight suspended from the other rod to tilt the cross arms 15 about the axis of the shaft 48 so as to cause the abutment 42 associated with the unbroken rod to lower to a position below the arcuate member 43 so that said abutment will slide off of the tilting cross arms and thus disconnect the arm 8 from the pump. With this brief explanation the operation of the construction shown in Figures 8 to llavill be apparent because of its similarity in some respects with the construction shown in Figures I claim:

1. A pump hanger comprising an arm having an eye, the lower wall of the eye being upwardly convex, means to pivotally suspend the arm from an operating member, a cross arm resting on the lower wall of the eye, and means to retain the cross arm in the eye.

2. The link described having upper and lower shoulders inside thereof to accommodate a nut therebetween, at one end and a tubular posite end.

3. A pump hanger comprising an arm having an eye, the lower wall of the eye be ing arcuate, means to pivotally suspend the arm from an operating member, a cross arm portion at its ophaving an arcuate recess fitting the arcus ate portion of the first arm, and means to connect the opposite ends of the cross arm to a polish rod clamp.

4. A pump hanger comprising rods, means to connect the rods at one end to a polish rod clamp, and means to connect the rods at the other end to an operating member, one of said means'operating upon the and having a box I breaking of one of the rods to release the 7 6. A pump hanger comprising a cross arm, means to tiltably connect the cross arm to an operating member, rods,-devices engaging the rods respectively and slidably mounted on the end portions of the cross arm, and latches connecting the arm connecting means to the rod engaging devices when the cross arm is approximately horizontal, one of the latches being released by tilting of the cross arm to release the associated rod-engaging device and permit it to slide from the cross arm. v

7. A pump hanger comprising an arm, means to pivotally suspend the arm from an operating member, a cross arm tiltably connected with the first arm" and provided at its opposite ends with slots, rods in the slots, nuts on the rods slidably mounted on the cross arm, latches detachably connecting the nuts to the. first arm and releasable by tilting of the cross arm, and means to connect the rods to a polish rod clamp.

8. A pump hanger comprising a tiltably mounted cross arm, rods, and means connecting the rods to the cross arm when the cross arm is approximately horizontal and operated by tilting of the cross arm to release the rods.

9. A pumphanger comprising a tiltably mounted cross arm, rods, devices engaging the rods respectively and slidably mounted on the end portions of the cross arm, and means to prevent the rod-engaging devices from sliding-off of the cross arm when the cross arm is approximately horizontal, said means releasing one of the rod-engaging devices and permitting it to slide from the the first arm and having its ends engaging 1 cross arm When the cross arm is 'tilted. the outer faces of the rod-engaging devices 10. A pump hanger comprising an arm, to prevent said devices sliding off of the means to pivotally suspend the arm from cross arm when said cross arm is approxian operating member, a cross arm fulmately horizontal.

crumedon the first arm, rods, devices en- Signed at Los Angeles, California, this 15 gaging the rods respectively and slidably 7th day'of September 1923. p

mounted on the end portions of the cross arm, and an arcuate member mounted on SUMNER B. SARGEN T. I

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