US2045220A - Draw works - Google Patents

Description

June 23, 1936. T, 5 DIETLE I 2,045,220 DRAW V'VORKS Filed Aug. 11, 1934 3 Sheets-Sheet l T. S. DIETLE DRAW WORK S June 23, 1936.

Filed Aug. 11, 1934 3 Sheets-Sheet 2 Ara Fieile I Patented June 23, 1936 DRAW WORKS Thomas S. Dietle, Pawhuska, Okla.

Application August 11,

5 Claims.

This invention relates to draw-works used in well drilling and under like circumstances, and particularly to a draw-works adapted to be operated by the axle of a'tractor.

One of the objects of this invention is to provide a supporting frame for the draw-works adapted to receive and support at one end the axle of the tractor, said frame also supporting a bull-wheel and shaft, a calf-wheel and shaft, and a cathead shaft, there being means whereby the several shafts may be driven simultaneously or independently, and whereby one of the shafts may be driven ahead while the other is driven in reverse.

A further object is to provide means for controlling the operation of these shafts, this means being disposed in proximity to the tractor so that one man may readily control the driving of the tractor axle and may also control the several brakes, clutches, etc., which control the several winding drums and shafts.

A still further object is to provide on this supporting frame an oscillating beam or walking beam which ordinarily is out of an obstructive position but which may be easily put into operation and used, as for the purpose of cleaning the well or pulling out ripped casing.

A further object is to provide means for operating a jerk line used to pull tongs when breaking pipe joints or used for setting up tool joints or breaking them.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings wherein:

Figure 1 is a side elevation of a draw-works constructed according to my invention.

Figure 2 is a like view to Figure 1 but looking at the opposite side.

Figure 3 is a fragmentary longitudinal sectional view in a vertical plane showing the manner in which the walking beam is used.

Figure 4 is a section on the line 44 of Figure 1 and 4-4 of Figure 2.

Figure 5 is a section on theline 5-5 of Figures 1 and 2.

Figure 6 is a sectional view on the line 66 of Figure 1 and Figure 2.

Figure 7 is a detail elevation showing the manner of connecting the housing of the tractor axle to the main supporting beams of the frame.

Figure 8 is a longitudinal sectional view thru the cat head shaft and the cat head thereon.

Referring to these drawings, Ill designates a supporting frame of channel iron, the two channel irons of the frame being connected to each 1934, Serial No. 739,464

other in any suitable manner as by the cross channel iron H. To the rear end of the beams or channel irons If), there are welded the channel irons I 2, the lower surface of this extension of the channel iron frame being upwardly and rear-' Wardly beveled or inclined, as at I3. The rear end of this frame carries the U-shaped clamps I4 which are adjustably connected at l5 to the channel iron extensions 1 2, these clamps being adapted to engage over the axle A of a tractor. Mounted upon this axle A are the two sprocket wheels It by which the various drums or spools and other parts of the draw-works are operated. Mounted in bearings I! on the beams I0 is a bull-wheel shaft l8 carrying upon it the bull-wheel spool l9 adapted to carry the tool line. One end of this spool is provided with a brake drum 20, the opposite end is flanged as at 2|, as is usual, and also mounted upon this shaft l8 outward of the inner bearing I I is the l2" sprocket 22 which is loose upon the shaft I8 but is adapted to be clutched thereto, as will be later stated.

Also mounted in bearings 23 mounted upon the forward ends of the beams I 0 is a calf-wheel shaft 24 which carries upon its opposite ends the 30" sprocket wheels 25 over which sprocket chains 26 pass to the sprocket wheels IS. The hub of one of these sprocket wheels 25 carries upon it a 12" sprocket 21. The hub of the opposite sprocket wheel 25 carries upon it the 20" sprocket 28. Passing over the 20" sprocket 28 and extending to the sprocket 22 on shaft I8 is a sprocket chain 29.- The sprocket wheels 25, 27 and 28 are all fast on the shaft. Also mounted upon this shaft is an eccentric 30. Loosely mounted upon the shaft is the calf-wheel spool 3| having the usual flange 32 at one end and the opposite end having a flange 33 provided with the brake drum 34 which is, of course, concentric to the shaft and extends laterally from the flange 33. Co-acting with the calf-wheel spool is a clutch element 35 and coacting with this clutch element is a second clutch element 36 adapted to be shifted into or out of engagement with the clutch element 35. Preferably, the shaft 24 is formed with a hexagonal portion 31'and the bore of the clutch element 36 is also hexagonal so as to fit this shaft and yet permit the clutch element to be shifted longitudinally thereon. By forming the shaft with an hexagonal portion 31 and forming the clutch element 36 to fit this shaft, strain is placed equally on all the six angular corners of the hexagonal portion 31 instead of causing this strain to bear only at one point as would be the case if a clutch element 36 were used which slid upon a key. Such construction soon causes the key to turn and wear out keyways and the key itself in both the clutch and the shaft. Suitable means is, of course, associated with the clutch element 36 for throwing it into or out of engagement with the clutch element 35, as will be later stated.

Mounted. upon channel irons 38 welded to the channel irons I0 is a bearing or bearings 39, in which a shaft 40 is fixed. Carried by the shaft 40 between the bearings is a pedestal 4| and to the pedestal is bolted the longitudinally extending channel irons 42 together constituting a walking beam, which walking beam is adapted to oscillate upon or with the shaft 40.

The rear end of the walking beamcarn'es upon it the pulley 43 while the opposite end of the walking beam carries upon :it a wheel i44,"the rim of which projects slightly below the channel irons 42. Mounted upon the shaft 40 is a pulley 45. Aicablez46 passes around the pulley 43 and then extends parallel to the walking beam itself and around :the pulley :45, :one end of this cable being attached to the bull-wheel .drum l9, as at 41. The :other end of this cable may pass upward over .a pulley 48 carried upon the upper end of the mast or derrick 49 :and then the .cable extends downward :and may be connected to any suitable tool :or other part designed to be oscillated. The wheelAl is designed to .co-act with the .cam .30 so that as .the shaft 24 :is rotated, the eccentric 30 will oscillate the beam, as shown in Fig. .3, for a purpose to be later stated.

Carried on shaft 40 is .a sprocket *wheel 59 having a sprocket chain 50* running over a sprocket wheel .on the calf-wheel shaft .24. It is, of course, tolbe understood that the pedestal 4 I is oscillatably :mounted upon the shaft -40, the shaft 40 :being held from rotation by set screws extending through the bearings and that the shaft 40 merelyacts as a pivotal support for this :ped estal. Carried upon one end of the shaft 40 is a cat head :51 which is bolted to the sprocket wheel -51], the extremity of this cat head .carrying a cap 52 holding the cat :head in place on the shaft. This cap ihasa threaded bore :52' to engage a screw on a measuring line reel, shown in dotted lines, used for carrying .a spooling or measuring line. This reel may be readily removed .or replaced any time desired. The .cathead will, of course,be =used'for picking up "tools or vfor picking up anything that is :heavy by taking a :few iturns with the endless rope around the-cat-head .and wrapping 'it around the pipe or other -.object to be handled. :By wrapping this line on the cat-head, around the pipe, the pipe may be unscrewed or screwed up.

The beam 42, when not in:u.se,'is extended-horizontally, parallel "to the upper edges of the beams Ill and is thus out of the way of everything. To put the beam into use as, for instance, in cleaning out a well, the line to be used for cleaningout the well is clamped at the hole :and then the slack of this line is pulled :back and laid in the pulley 43 and-carried doack over the pulley 45 and connected -to the bull-wheel spool l9, as at 41. The line is then unclamped at the hole and the weight raises the rear of the walking beam until the .101161111665 :up on the eccentric As the shaft?! :rotates, the eccentric will oscillate the beam and .this oscillation of the 'beam may be :used to pull tools on the end of the line in the holeor work these tools up and down or if casing is being ripped and it is desired to try the casing tosee if .it;is loose, it .is .not ,nec-

essary to pull out the tools but simple unthread the line connected up to the walking beam in the manner stated, set the brake on the bull-wheel, throw in the clutch on the calf-wheel shaft and try the pipe.

The calf-wheel drum has a bearing inside of each end and the drum is hollowed out to hold one gallon of oil and this oil is filled into the drum through a hole, this hole being normally closed by a plug 53. The calf-wheel shaft has two sprockets 25, as before stated, with sprocket chains running to the sprocket wheels M5 on the .tractor shaft, and this makes the pull even on each end of the calf-wheel drum.

The bull-wheel spool has a brake drum 2!] as .hereinbefore stated, while the calf-wheel spool has a brake drum 34. Operating over these brake drums are the brakes 54 and 55, respectively,

which brakes may be of any suitable construction and operation, but are shown as being respectively operated by means of brake tightening levers 5.6 and v5'! extending :to the rear end of the supporting frame in such position that they may be readily controlled by an operator standing immediately in front of the tractor, that is, between the :tractor and the draw-works.

The sprocket wheel 22 is loose on the shaft l8, whichcarries the bull-wheel l9, this sprocket wheel carrying a clutch element 58 coacting with a clutch element 59 carried by the shaft l8 and by throwing the shiftable clutch element 59 into and out of engagement with the clutch element 58, the bull-wheel shaft may be operated or not, as desired. The clutch element 59 and the clutch element 36 are both operated by clutch operating levers 60 and 61, which extend rearward to a position adjacent the rear ends of the brake levers so as to .be under the control of the operator stationed at the rear end of the draw-works and adjacent the tractor.

Mounted upon the sprocket wheels 25 are outwardly projecting wrist pins 62 having grooved sleeves 63. These wrist pins are for use with jerk lines such as used to pull tongs when breaking pipe jointsor to set up tool joints and break them. This does away with the necessity of using the ordinary jack and circle.

With the construction described, the bull-wheel spool, the calf-wheel spool, the cat-head spool and the walking beam can all be in operation at the same time either 'in reverse or ahead, or any one of these instrumentalities can be operated one at a time either in forward or reverse. This reversing movement of these parts is, of course, accomplished by reversing the movement of the axle of the tractor in the usual manner and by means which is commonly found in tractors and which will not be necessary to show.

The particular advantage of my walking beam over a walking beam having a pitman, is that with my improved .beam it is only necessary to clamp the line at the hole, pull slack line enough to put in pulley 43, and then unclamp the line at the hole. When the slack takes up, the beam automatically raises at one end. The other end automatically goes down and rides on the eccentric and ready for oscillation. When through oscillating the beam you simply clamp the line at the hole, pull slack line out of pulley 43, wind up the slack, and unclamp the line at the hole. The beam automatically drops down out of the way and you are ready to pull your line out.

With the ordinary beam a pitman is used fastened to one end of the beam, and a crank from a shaft is connected to the other end 01 the pitman to rock the beam. In order to put the pitman on the crank, it is necessary to stop the machinery and at the other end of the beam it is necessary to have a screw and clamps. To let in slackline you let'out the screw, and to take up slack line you take up the screw. With my walking beam the slack is automatically let out by raising up the brake on the bull-Wheel drum. To take up the slack in my construction you pull in the clutch IS without stopping the machinery. In ordinary walking beams it is necessary to pull the tools out of the hole to unclamp the line and take the pitman off the crank. This requires a lot of time and two men to do the work, where with my construction one man can do the work in less time.

The two wrist pins on the sprocket wheels 25 are for use with jerk lines extending to the tongs. One wrist pin may be used to pull the tongs to tighten a joint, and the other to pull the tongs to loosen a joint. The rear ends of the frame beams l0 are upwardly beveled like a sled runner in order to make it easy to load the structure on a truck when moving from one well to another.

The advantage of using a tractor mounted as shown and with power taken off the rear wheels, is that you secure the use of the tractor transmission, with three speeds ahead and one reverse. Where the power is taken off the tractor ahead of the transmission, as is ordinarily done, it is necessary to put in a series of clutches, with one speed forward and one reverse for each clutch. By taking power off the rear axle of the tractor, the tractor may be used for many other things, as for instance in moving, and the tractor can be driven from well to well separate from winch, which eliminates the weight of the winch.

What is claimed is:-

l. A draw-works including a supporting base, a bull-wheel shaft mounted thereon, a calf-wheel shaft mounted thereon, means for driving both of said shafts one independently of the other, a bull-wheel spool mounted upon the bull-wheel shaft and a calf-wheel spool mounted upon the calf-wheel shaft, a cathead shaft operatively supported upon said base between the bull-wheel and the calf-wheel shaft and above both of said shafts, the cat-head shaft carrying at one end a cat-head, means for driving the cat-head shaft from one of the first named shafts, a walking beam, a pivotal support therefor through which the cat-head shaft passes loosely, the walking beam having at one end a pulley and at the other end having a roller, an eccentric on the calfwheel shaft with which the said roller engages when the walking beam is tilted downward at the lower end of the beam, and a pulley loosely mounted on the cat-head shaft whereby a cable may be passed over the pulley of the walking beam around the pulley on the cat-head shaft and connected to the bull-Wheel.

2. A draw-works of the character described including longitudinally extending connected supporting beams, clamping means at one end of the supporting beams for engaging over the axle of a tractor, sprocket Wheels adapted to be placed upon the axle of the tractor, a calf-wheel shaft mounted in bearings at the opposite ends of the supporting beams from the axle clamping means and carrying sprocket wheels, sprocket chains connecting the sprocket wheels on the tractor axle with the last named sprocket wheels, a bullwheel shaft mounted on said beams between the calf-wheel shaft and the tractor axle clamping means, a bull-wheel spool loosely mounted upon the bull-wheel'shaft and having a brake drum, a calf-Wheel spool loosely mounted upon the calfwheel-shaft and having a brake drum, brakes for each of said drums, clutch means for each of said spools for connecting them to or disconmeeting them from the respective shafts upon which they'are mounted, an eccentric mounted upon the calf-wheel shaft for rotation therewith, a walking beam operatively pivoted at its middle upon the supporting beams and disposed between and above the bull-wheel and calf-wheel shafts, the walking beam having at one end a pulley and at the other end a roller adapted to bear against said eccentric when thewalking beam is canted from a horizontal position and a cable passing over said pulley on the beams and to the bull wheel spool.

3. A draw-works of the character described including longitudinally extending connected supporting beams, clamping means at one end of the supporting beams for engaging over the axle of a tractor, sprocket wheels adapted to be placed upon the axle of the tractor, a calf-wheel shaft mounted in bearings at the opposite ends of the supporting beams from the axle clamping means and carrying sprocket wheels, sprocket chains connecting the sprocket wheels on the tractor axle with the last named sprocket wheels, a bullwheel shaft disposed between the calf-wheel shaft and the tractor axle clamping means, a bullwheel spool loosely mounted upon the bull-wheel shaft and having a brake drum, a calf-wheel spool loosely mounted upon the calf wheel shaft and having a brake drum, brakes for each of said drums, clutch means for each of said spools for connecting them to or disconnecting them from the respective shafts upon which they are mounted, an eccentric mounted upon the calf-wheel shaft for rotation therewith, a walking beam operatively pivoted at its middle upon the supporting beams and disposed between and above the bull-wheel and calf-wheel shafts, the walking beam having at one end a pulley and at the other end a roller adapted to bear against said eccentric when the walking beam is canted from a horizontal position, the shaft upon which the walking beam is pivoted carrying at one end a cat-head, means for driving the cat-head shaft from one of the first-named shafts, and a pulley loosely carried upon the cat-head shaft whereby a cable trained over the pulley on the walking beam may pass around a second named pulley to the bull-wheel spool.

4. A draw-works of the character described including a supporting base, a shaft mounted upon the base, a bull wheel spool thereon, means for driving said shaft, a shaft operatively mounted upon said base parallel to but above the bull wheel shaft, a walking beam having a support rockably engaging said last named shaft, one end of the walking beam having a pulley and the other having a roller, a shaft having an eccentric engageable with the roller when the walking beam is turned into position at an angle to the plane of the base, the walking beam being shiftable from the last named position into a horizontal position parallel to the base, means for driving the eccentric carrying shaft, and a line extending over the pulley on the walking beam and engaging the bull wheel spool.

5. A draw-works of the character described, including a supporting base, a shaft mounted upon the base, a bull wheel spool thereon, means for driving said shaft, a second shaft, a walking beam having a pivotal support rockably operatively mounted upon the base above and to one side of the first named shaft, an eccentric operatively mounted upon the base and engageable with one end of the walking beam when the walking beam is turned into position at an angle 'tothe plane of the base, the walking beam being shiftable from the last named position into a horizontal position parallel to the base, means for driving the eccentric, a pulley mounted on the walking beam at that end remote from the eccentric, a pulley mounted upon the pivotal center of the walking beam and a line extending over the pulley on the end of the walking beam trained over the pulley at the pivotal center of the walking beam and engaging the bull wheel spool.

THOMAS S. DIETLE.

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