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Oct. 28, 1952 J. W. MENHALL 2,615,679 WELL, DRILLING RIG Filed Nov. 14, 1947 4. Sheets-Sheet l INVENTOR. BY 344-/7-2 6%-- Oct. 28, 1952 J. W. MENHAL 2,615,679 WELL DRILLING RIG Filed Nov. 14, 1947 4. Sheets-Sheet 2 ZZZZZZZZZZZZº2zº INVENTOR, Oct. 28, 1952 J. W. MENHALL 2,615,679 WELL, DRILLING RIG Filed Nov. 14, 1947 4. Sheets-Sheet 3 - w o V \ H NHN sy instadRN. N 2. SEED INVENTOR. 62-o- Oct. 28, 1952 J. W. MENHALL 2,615,679 WELL, DRILLING RIG Filed Nov. 14, 1947 4. Sheets-Sheet 4 GitHiies J) -4. 222-gINVENTOR. BY Patented Oct. 28, 1952 2,615,679 UNITED STATES PATENT office James W. Menhall, Benton, Ill. Application November 14, 1947, Serial No. 786,122 1 Claim. (CI. 254-187) 1. My present invention is a continuation in part of the operating mechanism of my invention, the of the invention of my pending application for upper portion of the derrick being shown broken Patent Serial No. 713,789 filed December 3, 1946, away, the draw-works cable leading off of the and embodies certain improvements in the drill winch drum being also broken away. rig of said application from which desirable func 5 Figure 2 is a vertical longitudinal sectional tions are derived that are advantageous in the view taken through the winch drum shaft and practical operation of the rig. the drum thereon, said view showing the friction More specifically setting forth the present ob and positive clutch units associated with these ject of this invention it is noted that my rig parts. of the type of my said application contemplates 10 Figure 3 is a sectional view of fragmentary the use of certain rotary table driven by line nature illustrating the operating rod for shiftin shafting, and gearing, leading from a Suitable the movable member of the jaw clutch. ' ' ... : motor, all on the base frame of the rig. The Figure 4 is a side view of the shifting arm customary draw-works operating Winch, carried carried by the jaw clutch actuating rod. on a winch and catheadshaft, is employed. Pro Figure 5 is a detail fragmentary plan view visions are made by a power take-off to carry showing more clearly the lock pin carried by the the drive of the motor from the line shafting jaw clutch shifting rod and which cooperates leading to the table, to the winch and catheads, with a bayonet slot in the sleeve bearing for said power take-off including Worm gearing for Said rod, for locking the jaw clutch in engage positive uncushioned driving of the winch drum 20 ment in relation to the movable and stationary shaft and winch. For operating the table with parts thereof. cushioned drive effect from Said line shafting Figure 6 is a view taken vertically through Suitable means are employed. the worm drive gear unit and disclosing the lat In the above construction a friction clutch ter in Sectional view, said unit being a part of unit is utilized to operate the draw-works winch 25 the power takeoff from the main line shafting drum, as is customary in present well rig design. of the rig to carry the drive therefrom to the It is desirable in the fishing of drill pipe, drill Winch drum and cathead shaft. collar and bit stuck in a hole, and under other Figure 7 is a fragmentary top plan view bring conditions to have repeated, Sudden and positive ing out more clearly the arrangement of the mo pulls on the line to jerk the stuck parts loose. 30 tor and the drive line shafting which leads to When the friction clutch between the drumshaft the rotary and has associated therewith the and Winch drum is employed, there is sometimes power takeoff, that leads to the winch drum slippage which reduces the effectiveness of the shaft. - pull required to jar a bit, etc., loose. Therefore, Figure 8 is a view taken cross sectionally I have combined in my present improved rig, a 35 through the base frame of the rig adjacent to a Special auxiliary clutch of the positive or jaw point outwardly of the rotary table and bringing type, designed to be used only in the case of out more clearly the disposition of certain of the such an emergency as above mentioned, and by control lever and other parts. which to operate, the winch drum and draw Figure 9 is a view partly in section showing works in event of failure of the friction clutch to 40 the drive arrangement from the engine output accomplish desired results along the lines above shaft to the rotary. Set forth. Referring first to Figures 1 and 7 of the draw In carrying out my invention I employ both ing the general construction of my drilling rig friction and positive jaw type clutches, cooper may be characterized as including a base frame able with the winch drum and shaft, to transmit comprising base longitudinal sills and a plu. the uncushioned drive of positive worm or like rality of cross pieces or bars 2. Mounted on this gearing from the winch shaft to the drum, and base frame is the prime mover or motor 3 and uSable preferably alternatively, for the purposes the derrick 4 which supports the draw-works above outlined. the cable 5 of which is shown in Figures 1 and 8. A complete understanding of my invention will 50 There will be seen to be mounted upon the base be had on reference to the following detailed frame aforesaid the driving means intermediate description, and the annexed drawings. the engine 3 and the rotary table 6 likewise sup In the accompanying drawings: ported by the base frame, which driving means Figure i is a view in side elevation showing is also employed for the operation of the winch a drilling rig embodying the essential features 55 drum l mounted on the winch and cathead shaft 2,615,679 3 4. 8. Co-operating with the shaft 8 and mounted wheel 31 on the winch drum and cathead shaft in connection therewith after the customary prac 8 previously mentioned, the gear 3 f being keyed tice are the plain cathead 9 and the automatic to the latter Shaft, cathead 0, the latter being of the type generally From the foregoing it will be seen that the known in the art today as "Simplomatic.' 5 positive drive from the line shaft 4 may be The winch and cathead unit referred to form transmitted through the clutch 6, SprocketS 5 ing a part of the draw-works operating means and 27 and worn 30 and worm wheel 3 f to of the rig are suitably mounted upon a Super the Winch drum shaft 8 on which the wheel 3 structure generally designated which is car is keyed. The said drive is an uncushioned drive ried on the base frame including the Sills or 10 and enables the full driving forces of the motor longitudinal members . to be transmitted to the winch drum and cathead I now refer to the driving means including cer Shaft 8. tain line shafting which connects the engine 3 Referring to Figure 2 of the drawings it will with the rotary 6, and which is adapted to drive be noted that the winch and cathead unit of the winch drum and cathead shaft 8. my construction is very similar in nearly all re The motor 3 is any conventional type of hydro-. Spects to units of this type now in use and as carbon engine. Its shaft is connected through set forth in my previous application. The winch the means of conventional transmission gearing drum 7 about which the draw-works cable or line of differential speed type located in the transmis 5 passes and which controls the operation of the sion housing 2 adjacent to the inner end of 20 draw-Works is loosely mounted upon the shaft 8. the engine said transmission unit including a The shaft 8 as stated before carries the plain driven shaft connected by a flexible coupling 3 cathead 9 and the "Simplomatic' cathead 0, at with the line shaft 4 supported in suitable bear opposite ends thereof, and the driving operation ings on the base frame of the rig and having of the winch drum 7 is effected by the employ thereon loosely mounted in relation thereto the 25 ment of the friction clutch unit 32 which may chain driving sprocket t5. The sprocket 5 has be any conventional and suitable type of friction a clutch member at its outer side adapted to be clutch for conveying the drive of the shaft 8 to engaged by a movable clutch member 6 Splined the drum l. The clutch of the unit 32 is operable or otherwise connected to the shaft f4 whereby manually by means of a clutch shifting yoke 33 to operatively connect the shaft 4 to drive the 30 with which is connected a link rod 34 shown in sprocket gear 5 under the control of a suit dotted lines in Figure 8 that leads to the man able lever 7 adapted to be manually operated. ually operable clutch throw lever 35 at the oper The said lever 7 operates the clutch member 6, ator's station. since it is connected thereto in a conventional The general mechanisms and construction of mechanical manner by a cross shaft on which my Well rig as thus far set forth is substan the lever is mounted, and a rod which Operates a tially the same as embodied in my previous appli pivoted link in turn connected to a suitable clutch cation herein identified and the control of the yoke member as Seen in Figure 7.