US1162392A - Pulling attachment for oil-well derricks. - Google Patents

Description

c. H. OVERLY & O. A. THOMPSON.

PULLING ATTACHMENT FOR OIL WELL DERRICKS.

APPLICATION FILED DEC-24. I914.

1,162,392. Patented Nov. 30, 1915.

2 SHEETSSHEET I.

A IA/EY C. H. OVERLY & 0. A. THOMPSON. PULLING ATTACHMENT FOR OIL WELL DERRICKS.

APPLICATION FILED DEC.24. 1914. v 1 ,162,392. Patented Nov. 30, 1915.

2 SH E-ETS-SHEET 2.

IN [/5 N TORS C.H. Overly and OAThon-sorz rin'rrnn srArEsrA nn'r osmon.

CHARLES HERMAN OVERLY AND UVVEN ALONZO THOMPSON, OF INDEPENDENCE, KANSAS, ASSIGNORS OF ONE-FOURTH TO W. W. CURTIN, OE INDEPENDENCE, KANSAS, AND (ENE-FOURTH 'IO THOMAS G. LANEY, OF ERIE, KANSAS.

PULLING ATTACHMENT FOR, OIL- ELL DERR-ICKS.

Specification of Letters Patent.

Application filed December 24', 1314. Serial No. 878,876.

1 b all whom it may concern:

Be it known that we, CHARLES H. OVERLY ing is a specification. 10

This invention relates to pulling attach ments for oil well derricks and isdesigned as an improvement in the pulling machines on which we secured United States Patents +t1,110,003 and #l,l10,00l on September 8,

' 191%, which machines are chiefly for use in connection with wells from which the derricks have been removed, though they may, wit-l1 some trouble, be used on bobtailed derricks, it being understood that a bobtailed derrick is one from which has been removed the engine, boiler, walking beam and bullreel employed in the drilling of the well and the sinking of the tubing and rods therein.

Before the derrick is bobtailed, it is customary to pump it for a time through the operation of the walking beam, and after being bobtailed it is pumped by meansof a shackled rod line from a power house, large number of wells being thus pumped from such power house. Ordinarily the bobtailed derricks of such wells are each equipped with a small pull reel, for the purpose of pulling the tubing and rods by means of horsepower, which rods are idle for the greater part of their period of service because of the infrequency of the pulling operations. It will thus be evident that there is considerable expense attached to the equipment of a larger number of derricks with such pull reels.

The appliances of our former patents, hereinbefore identified, are of great value for use with wells from which the derricks have been removed and can be used on bobtailed derricks lacking the small or special pull reels, but we have found that it is extremely desirable to not only produce a con veniently portable and easily set up pulling attachment for use on bobtailed derricks, but one which can be used for either light or heavy service, that is, one which will combine the functions of the appliances of both patented structures.

Our object, therefore, is to produce a single appliance of relatively small, light and compact construction, which can be used for light or heavy work, be easily and quickly transported from one derrick to another as needed, and easily and quickly set up or taken down and be controlled with absolute safetyby a single operator.

With thisgeneral object in view, the invention consists in certain novel and peculiar features of construction and organization as hereinafter described and claimed, and in order that it may be fully understood, reference is to be had to the accompanying drawings, in which: I i v Figure 1, is a side elevation of a bobtailed derrick equipped with a pulling attachment, embodying our invention. Fig. 2, is an outer face View of the attachment. Fig. '3, is a sectionon the line 1IIIII of Fig. 2. Fig. 4C, is a similar section with certain parts differently positioned to show the operation when light work is being performed. Fig. 0, IS a similar view lllustratlve of the op eration when heavy work is being done. Fig. 6, is a fragmentary perspective view to show the arrangement and relation of certain of the parts of the attachment. Fig. 7, is a detailed perspective view of the controlling lever. Y

In the said drawings, 1 are parallel beams provided at their lower ends with notches 2 and at their upper ends with notches 3 for purposes hereinafter disclosed. Near their lower ends the beams are connected by parallel cross pieces 4 and near their upper ends by parallel cross pieces 5, the latter and one of the cross pieces 4 being disposed at the outer edges of the beams 1. Extending transversely of the frame thus constituted and journaled in sliding boxes 6, mounted in brackets 7-, secured on the outer edges of the beams, is a shaft 8, and for convenience of portability carrying wheels 9 are mounted on the outer ends of said shaft, one of which wheels it is advisable to remove when the appliance is attached to a derrick, in the manner hereinafter explained. The attachment travels upon the wheels 9 from one derrick to another and at such time is equipped with a tongue, not shown, as forming no'part of the invention, and when about I to be arranged in operative position, the machine is backed up close to the side of the derrick. The tongue is then removedand the machine Patented Nov. 30, 1915.

is secured to the derrick in a manner-hereinafter explained.

Journaled' upon the shaft between the beams lis a reel, composed of a drum 10 to which one end of the pulling and lowering cable 11 is secured. At one side of drum 10 is a larger drum 12, the inner flange of which is provided with a notch 12. For performing very light work, such as raising a few sections of pumping rods, the cable 11 can be slipped through the notch 12 so that it will wind upon the drum 12 which, being of greater diameter than drum 10, enables the light work to be performed more rapidly than it could be performed by winding the cable upon drum 10. At the opposite side of drum 10 is a large drum 13 to, which one end of the ground line 13 is secured, this line or cable being wound reversely on the reel, with respect to the cable 11, so that when the draft animals are driven forward they unwind ground line or cable 13 for the purpose of winding cable 11 on drum l0. Reverse travel of the draft animals will permit the load of rods or tubing on the cable 11 to reverse the described operation of the drums.

Forming the outer sides or walls of drums 12 and 13 are brake wheels 14 for the reel, and arranged adjacent the peripheries of said wheels are brake bands 15, connected together by a tie bar 15, arranged between beams 1 so that the latter shall guard against disarrangement of the brake bands with respect to the brake wheels. The outer ends of the brake bands terminate in inturned lips 16 connected by angle bolts 17 to angle plates 18, secured to the cross piece at at the outer edges of the beams 1. The upper ends of the plates 18 are bolted as at 19 to the brake bands, and for purposes of adjustment, the said plates are provided with longitudinal slots 20, through which the bolting members extend. This connection between the brake bands and the anchoring plates 18 is to provide for adjustment or take up of the hands when the brake wheels 14 are appreciably reduced in diameter through wear. The opposite ends of the brake bands are connected pivotally as at 21 to a transverse crank shaft 22, the operative connection being made to a pair of similar cranks 23 of said shaft. The latter is journaled in bearings 24, secured to what may be termed the inner of the pair of cross pieces 1.

Journaled in a pair of bearing plates 25, secured to the outer cross piece 4 is a cranked rock shaft 26, and pivot-ally and slidingly engaging the cranked portion of the said rock shaft are the slotted lower ends of a pair of links 27 which extend upward through the lower portions of the brackets 7 and are pivotally attached to the lower ends of the bearing boxes 6,'the slots or openings in the lower ends of the brackets 7 being sufiiciently large to permit the links to assume the angular positions indicated by dotted lines in Fig. 5, through the operation of the rock shaft 26, as hereinafter explained.

28 are helical springs mounted upon the links 27 and secured at their upper ends to said links and hearing at their lower ends upon washers 29 resting upon the rock shaft. By reference to Figs. 3 and 5 more particularly, it will be apparent'that the pivotal point of connection between the rock shaft and the links 27 is sli 'htl r inward with respect to the plane occupied by the axes of said shaft and the reel, that is to say, said pivotal point of connection is off center, and to establish and maintain this relation of said parts as long as desirable, a retractile spring 30 connects the cranked portion of the shaft 26 with one of the beams 1. The spring is preferably secured to the beam by means of a hook 31 driven into the inner edge of the beam.

The operating lever 32 is arranged adjacent and preferably outward of one of the beams 1 and has a pivot portion terminating in an inwardly projecting crank arm 31, said pivot portion 33 being journaled in bearing plates 35 secured to the outer cross piece 4t at the inner side thereof, and said crank arm 3% is pivotally connected by a link 36 with one of the cranks 23 of the shaft 22. It will thus be seen when the lever 32 is swung to the right in Fig. 3, iteifects the application of the brake bands to the brake wheels as indicated in Fig. and that continued movement of the lever to substantially' the position which it occupies in Fig. -l results, through the downward pressure imposed by the brake bands on the brake wheels, in moving the reel as a whole downward, the springs 28 being compressed in suchoperation, as indicated in Fig. 4, and it will be likewise obvious that relaxa tion of the power applied to lever 32 permits the compressed springs 28 to re'e'levate the reel.

The construction as described is adapted for the performance of light work, and to adapt it to the performance of heavy work a bar 37 is pivoted to one of the cranks 23 and is provided in one edge with an elongated notch 38. \Vhen heavy work is to be performed this notched bar is swung from the inoperative position shown in Fig. 3 to the position shown in Fig. 5, which disposes its notched edge downward with the crank of shaft 26 engaging said notch. lVhen the lever is in normal position, as shown by Fig. 3, the outer wall of the notch is against the cranked portion of said shaft 26, and as the lever is operated it applies the brake bands to the brake wheels, as explained, and, at the same time, adjusts bar 37 until the rear wall of its notchis in engagement with ment of the lever continues said bar shall break the off center connection between the shaft 26 and the reel and cause said shaft to swing outwardly to the position indicated by dotted lines in Fig. 5, it being understood that as this occurs the reel is moved downward without compressing springs 28, because the links 27 swing outward, as indicated by dotted lines in the last-named figure, to accommodate the downward movement of the reel.

As hereinbefore explained, the machine, while still equipped with two wheels 9, is backed up closeto the derrick 39 and after the tongue has been removed the wheeled frame is tiltec downward at its rear end until. the notched lower ends of the beams are adjacent the flooring l0 of the derrick. r block and tackle connection is then made between a ring 41 on the upper part of the frame and the opposite side of the derrick, as indicated diagrammatically by cable as and tackle block 43, so that by hauling upon said cable and suitably guiding the frame, the notches 2 of the latter can be caused to engage the adjacent edge of the flooring and the frame tilted until its upper notches 3 receive the first girt of the adjacent side of the derrick. The frame is then secured in any suitable manner to the derricx and the elevating tackle for the cable as may be removed. The pulling cable l1 is then carried over the crown wheel 45 of the derrick and the free end of the said cable is connected by the customary hook withthe bail or eye of an elevator, which in turn is connected in the usual manner tothe rods or tubing to be pulled from or lowcred into the well. The hook, elevator and rod or tubing is not illustrated on described in detail as such parts are shown and described ina general way in applicants patents hereinbefore identified, to which reference is here made. Furthermore, the connection between a pulling cable and the parts to be raised orlowered is ofcommon and well known construction and needs no illustration or detailed description.

Whenit is desired to pull a load, such as rods .or tubing which are lighter than the reel. the parts are arranged as shown most clearly in Figs. 3 and l, in which figures it isnoted the notched bar 37. occupies an inoperative position. To pull such load an elevator is placed under the knuckle, not shown, on a rod projecting above the top of the well casing, not shown. The hook on the cable is then attached to the elevator and the horses driven to utilize the ground line to turn the reel and thus wind the lifting cable thereon to raise the rod until the next joint appears abovethe casing. The lever is then operated to applythe brake bands to the brake wheels. A second elevator is then fitted on the second rod below the knuckle thereof and the operator eases the load downward until the weight is imposed on the top of the caslng. The.

first rod is then removed and the pulling cable attached .to the second elevator, after which the horses are started again to raise the load until the upper end of the third rod is abovefthe casing, when the actions described are repeated. The pulling operation described is the same with the tubing of the well. For placing rods in the well, after having first elevated the first joint of the rods or tubing in line with the well by means of the pulling cable, the operator grasps the brake lever and eases off until the joint is lowered until an elevator placed under the first knuckle rests upon the cas-v ing. Another joint is then raised to an up.- right position over the first joint. It is now necessary to make a kick off, that is to say, the rod suspended in the well from the casing must be raised slightly in order to permit the first mentioned elevator to be withdrawn. To accomplish this the operator grasps and turns the reel enough to take up any slack which may be in the pulling cable and then. applies the brake to give control of the reel. The operation. of the brake lever is then continued to effect the depression of the reel and the compression of springs 28, if the work being performed is light, that is to say, if the work is lighter than the reel which ordinarily weighs approximately seven or eight hundred pounds. This action. of course, is performed after the joint attached to the pulling cable is coupled to the joint supported from the cas ing, and bv thus raising both joints of the rod the elevator supporting the joint or joints within the well can be removed. The action described is known as the kick off operation.

The actions described are repeated until the entire line of rods is lowered, unless the line is so long that the load becomes very heavy, in which event the operator swings the notched. bar to operative position, as shown in Fig. 5. hen this is done the subsequent manual operations are as described.

buteach time a kick off is made, the bar 37 breaks the joint between the rock shaft 26 and the reel to avoid the necessity of compressing the spring in making the kick off, which would merely represent that much additional force which the operator would be compelled to exert, in order to make the kick off, it being understood that in light work the springs are desirable because the load is ordinarily insufficient to relevate the reel, and because the force which it is necessary for the operator to exert in compressing the spring is'but little more than that required for the lifting of the load.

This attachment is adaptable instantly to in operation by :the operator as distin-- gulshed from the pulling machines employing wheel pegs, ratchet levers 'or kinking devices. t

This device, in addition to the advantage of performing the functions of both of our prior structures is also of smaller and more compact and hence more conveniently portable construction. Furthermore, it can be set up or taken down with greater ease and facility on bobtailed derricks.

From the above description it will beapparent that we have produced a pulling attachment for oil well derricks which embodies the features of advantage enumerated as desirable and while we have illustrated and described the preferred embodiment of the invention, it is to be understood that we reserve the right to make such changes as properly fall within the spirit and scope of the appended claims.

\Ve claim 1. A pulling attachment for oil well derricks, comprising a suitable frame, a windmg mechanism thereon, a movable ournal support for the winding mechanism, a rock shaft mounted on the support, a link connection between the rock shaft and said journal support, manually operable means for depressing the journal support and winding mechanism, and yielding means for preventing the accidental operation of said rock shaft when the winding mechanism is depressed.

2. A pulling attachment for oil well der ricks, comprising a suitable frame, a winding mechanism thereon, a movable journal support for the winding mechanism, a rock shaft mounted on the support, a link connection between the rock shaft and said journal support, bra-king appliances for the windmg mechanism, manually operable means for operating the braking appliances to prevent rotation of the winding mecha nism and then causing said appliances to effect depression of the winding mechanism, and yielding means for. preventing accidental operation of said rock shaft until the braking operation has been performed.

3. A pulling attachment for oil well derricks, comprisin a suitable frame, a rock shaft mounted thereon, and provided with an upwardly projecting crank, journal boxes above and pivotally linked to the crank of the rock shaft and adapted for up and down movement on the frame, the links having endwise slidable movement with respect to the crank shaft, springs mounted on the links and supported by the crank of the rock shaft and exerting upward pressure on the links to hold the journal boxes normally elevated, a winding mechanism ournaled 1n sald boxes, and a manually oper able means for depressing the journal boxes against the resistance of said springs.

.4. A pulling attachment for oil well derricks, composing a suitable frame, a rock shaft mounted thereon, and provided with an upwardly projecting crank, journal boxes aboveand pivotally linked to the crank of the rock shaft and adapted for up and down movement on the frame, the links having endwise slidable movement with respect to the crank shaft, springs mounted on the links and supported by the crank of the rock shaft and exerting upward pressure on the links to hold the journal boxes normally elevated, a winding mechanism j ournaled in said boxes, yielding means for holding the crank of said shaft off center with respect to the plane occupied by the axis of said shaft and of the journal boxes, and manually operable means for depressing the journal boxes against the resistance of said springs.

5. A pulling attachment for oil well der ricks, comprising a suitable frame, a rock shaft mounted thereon, and provided with an upwardly projecting crank, journal boxes above and pivotally linked to the crank of the rock shaft and adapted for up and down movement on the frame, the links having endwise slidable movement with respect to the crank shaft, springs mounted on the links and supported by the crank of the rock shaft and exerting upward pressure on the links to hold the journal boxes normally elevated, a winding mechanism journaled in said boxes, and a manually operable means for depressing'the journal boxes against the resistance of said springs, in combination with means adapted for actuation by said manually operable means to operate said crank shaft and thereby leave the winding mechanism and said journal boxes free to move or to be moved downwardly.

6. A pulling attachment for oil well der ricks, comprising a suit-able frame, a rock shaft mounted thereon, and provided with an upwardly projecting crank, journal boxes above and pivotally linked to the crank of the rock shaft and adapted for up and down movement on the frame, the links having endwise slidable movement with respect to the crank shaft, springs mounted on the links and supported by the crank of the rock shaft and exerting upward pressure on the'links to hold the journal boxes normally elevated, a winding mechanism jour naled in saidv boxes, and a manually operable means for depressing the journal boxes against the resistance of said springs, in combination with means'adapted for actua tion by said manually operable means to operate said crank shaft and thereby leave the winding mechanism and said iournal boxes free to move or to be moved downwardly, and braking appliances for the winding mechanism connected to said manually operable means to be actuated to lock the winding mechanism against rotation prior to the operation of the crank shaft.

7. A pulling attachment for oil well derricks, comprising a. suitable frame, arock shaft mounted thereon provided with an upwardly projecting crank, journal boxes mounted on the frame for up and down movement, links pivoted to the journal boxes and provided with longitudinal slots receiving the crank of the rock shaft, a winding mechanism journaled in said boxes, and brake wheels forming a part of the winding mechanism, springs mounted on the links and resting on the crank of said shaft and engaging the links to hold the journal boxes normally elevated, brake bands adja- 7 cent the brake wheels and anchored at one end to said frame, a shaft provided with cranks pivotally connected to the opposite ends of said bands, a manually operable lever mounted on the frame and provided with a crank arm, a link pivotally connecting said arm to operate said crank shaft when said lever is operated to operate the braking mechanism, a bar pivotally mounted on the crank shaft and provided with a notch in its under side receiving the crank of said rock shaft and adapted under the operation of said lever to slide inoperatively on the crank shaft and then under the continued operation of said lever to impart roshaftmounted thereon provided with an upwardly projecting crank, journal boxes mounted on the frame for up and down movement, links pivoted to the journal boxes and provided with longitudinal slots receiving the crank of the rock shaft, a winding mechanism journaled in said boxes, and brake wheelsforming a part of the winding mechanism, springs mounted on the links and resting on the crank of said shaft and engaging the links to hold the journal boxes normally elevated, brak'e bands adjacent the brake wheels and anchored at one end to said frame, a shaft provided with cranks pivotally connected to the opposite ends of said bands, a manually operable lever mounted on the frame and provided with a crank arm, a link pivotally connecting said arm to operate said crank shaft when said lever is operated to operate the braking mechanism, a bar p'ivotally mounted on the crank shaft and provided with a notch in its under side receiving the crank of the said rock shaft and adapted under the operation of said lever to slide inoperatively on the crank shaft and then under the continued operation of said lever to impart rotation to the rock shaft to permit the brake bands to pull the winding mechanism downward, and a retractile spring for resisting the rotation of the shaft by said notched bar.

In testimonywhereof we aflix our signa tures, in the presence of two witnesses.

CHARLES HERMAN OVERLY. Ol/VEN ALONZO THOMPSON.

Witnesses:

ERMA F. MATT EWS, Rosin \VILKERsoN.

Copies of this patent may be obtained for five cents each, by addressing the v Commissioner of Patents, Washington, I). C. l

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