US784571A - Well-drilling mechanism. - Google Patents

Description

No. 784,571. PATEN'TED MAR. 14, 1905. J. G. KNUPP &: J. G. GREENE.

WELL DRILLING MECHANISM.

APPLICATION FILED JAN. 12, 1904.

2 SHEETS-SHEET 1.

Wifges No. 784,571. PATENTED MAR. 14, 1905. J. G. KNUPP & J. G. GREENE.

WELL DRILLING MECHANISM APPLIOATION FILED JAN.12, 1904.

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UNITED STATES Patented March 14, 1905.

PATENT OFFICE.

JACOB G. KNUPP AND JAMES G. GREENE, OF WVARREN, PENNSYLVANIA.

WELL-DRILLING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 784,571, dated March 14, 1905.

Application filed January 12, 1904. Serial No. 188,712.

To all whmn it may OOH/0877b.

Be it known that we, JACOB C. KNUPP and J AMEs Gr. GREENE, citizens of the United States, residing at WVarren, in the county of \Varren and State of Pennsylvania, have invented a new and useful ell-Drilling Mechanism, of which the following is a specification.

This invention relates to well-drilling mechanism; and the principal object thereof is to provide an improved form of well-drilling mechanism characterized by great strength, but so constructed as to be readily portable and have comparatively little weight.

A further object of the invention is to provide improved means for adjusting the sandreel shaft to enable the driller to apply power for raising the bucket or to brake the sandreel when lowering the bucket.

In accomplishing the objects above mentioned and others which will appear as the invention is more fully disclosed I preferably employ the novel construction, combination, and arrangement of parts of a well-drilling mechanism hereinafter described, illustrated in the preferred form in the accompanying drawings, and having the novel features thereof clearly pointed out in the appended claim.

In the drawings, Figure 1 is a view in perspective of the complete apparatus, part being broken away at one end to save space. Fig. 2 is a view in perspective of the apparatus, showing the opposite side thereof from that shown in Fig. 1. Fig. 3 is a detail view in perspective, showing the portion of the apparatus broken away in Fig. 2. Fig. 4 is a detail view in perspective, showing the sand-reel shaft and the mode of supporting it. Fig. 5 is a view in side elevation of the walkingbeam. Fig. 6 is a plan view of the walkingbeam.

Referring to the drawings, in which corresponding parts are designated bysimilar characters of reference throughout, 1 1 designate the derrick-standards, which converge as they rise and are connected by suitable oblique and transverse braces in the usual manner. The

standards 1 1 rise from a base (designated generally as B) composed of longitudinal members 2 2, mounted on blocks, and transverse members 3, rigidly secured to the longitudinal members. Oblique braces 4 rise from the corners of the base B and are securely clamped at their upper ends to the derrickstandards, as shown. The braces 4 are connected by transverse members intermediate of their ends, and other means for strengthening said braces may be employed, if desired. At the top of the derrick the usual crown-block 6 is secured, and a crown wheel or pulley 7 is arranged for rotation in the crown-block. In order to brace the standards against lateral movement in their own plane, extra stay-wires 8 are arranged between the standards in the crossed position indicatechand turnbuckles 9 at the lower ends of said staywires serve to vary the tension of the wires at will. By this means Whenever the derrick has acquired a slight lateral slant in the plane of the standards increase in the tension of one of the extra stay-wires and decrease in the tension of the other will restore the derrick to its normal position.

In suitable uprights upon the base of the derrick between the rear oblique braces the bull-wheel 9 is journaled in the usual manner. In front of the derrick a series of mud-sills 10 support frameworks 11 and 12 of similar structure, upon which are mounted bearingblocks 13 for the shaft of the band-wheel 14. The frameworks l1 and 12 are used in lieu of the heavy timbers formerly used in well-drilling rigs for that purpose, and consist of upper and lower horizontal members supported upon crossed obliquely-arranged members, as shown. A tug wheel or pulley 15 is bolted or otherwise fastened to one face of the bandwheel, so as to rotate therewith and impart movement to the rope by means of which the bull-wheel is operated. The sandreel shaft 16 has one end journaled in a post 17, mounted upon a timber carried by two of the mud-sills, and has the gudgeon at the other end journaled in a box 18, provided at top and bottom with vertically-disposed studs 19 and 20, which tu rn in bearings provided therefor in a frame 21, arranged for sliding movement in the framework 11. The sand-reel shaft 16 is arranged in front of the band wheel, as shown, and a brake-wheel 22 is rigidly mounted upon the shaft 16 is such position that the sliding movement of the frame 21 will bring the brakewheel into contact with the band-wheel or into contact With a brake-block arranged in front of the brake-wheel. The sand-reel 23 is also rigidly mounted on the shaft and is caused to rotate when the brake-wheel is brought into contact with the band-wheel, as above stated. The means employed for imparting sliding movement to the frame 21 in order to bring the brake-wheel into contact with the bandwheel or into contact with the brake-shoe consists of a reach 24, extending from the frame 21 to a platform provided on the base of the derrick and a lever 25, pivotally mounted on the base of the derrick and suitably connected with the end of the reach 24.

By mounting the gudgeon at the end of the shaft 16 in the box 18, provided with the vertically-arranged studs 19 and 20, the sliding movement of the frame 21 in order to bring the brake-wheel into contact with the bandwheel or the brake-block is permitted without interfering with the rotation of the shaft 16, as the box 18 will turn as the frame 21 is moved forward or backward, and so keep the gudgeon of the shaft 16 properly alined in the box.

At oneend of the band-wheel shaft a crank 26 is rigidly mounted, and a pitman 27, operated by said crank, imparts rocking movement to a walking-beam 28, pivotally mounted in the usual manner at the top of the Sampson post 29. The walking-beam 28 is preferably of the form illustrated, consisting of a longitudinal timber 31, mounted on a block 32, a braced upright 33 on top of the longitudinal member at the middle point, and a plurality of truss-rods 34:, arranged above and below the timber 31 and just below the block 32 and above the upright 33.

Movement is imparted to the band-wheel by means of a belt 35, traveling over the bandwheel and also over an engine wheel 36, mounted in suitable bearings at the front of the mechanism above one of the mud-sills 10. In order to keep the belt under proper tension, we provide a belt-tightener, comprising a pivoted frame 37, a tightening-roller 38, journaled in the frame and resting upon the upper lead of the belt, and a turnbuckle connecting the free end of the frame 37 with one of the timbers connecting the frameworks 11 and 12. The turnbuckle forms means whereby the pressure of the belt-tightening roller upon the upper lead of the belt may be varied at will and the friction of the belt upon the enginewheel and band-wheel increases or decreases as required.

It will be noted that under this invention the supporting means for the band-wheel that receives motion from the source of power and the tug-wheel from which motion is transmitted to the bull-wheels is located in front of the derrick floor or platform, which is consequently unobstructed by these members. The power-belt likewise extends from the front of the derrick to the motor, which latter is not shown, and the belt-tightener occupies a position where it is readily accessible and where it may be made thoroughly effective. The brake-wheel or friction-wheel of the sand-reel is disposed between the upper and lower leads of the power-belt, and therefore out of the way, while the means for settinglthe said brake or friction wheel are extendedto the derrick floor or platform Within convenient reach of the operator.

The operation of the well-drilling mechan ism, as above described, is similar in general features to the operation of rigs of similar character and no detailed description thereof appears to be necessary, as the operation may be understood by any one skilled in the art from the foregoing description and the accompanying drawings.

In the construction of the well-drilling mechanism wood is commonly used inmaking most of the parts thereof, as illustrated; but it is to be understood that the timbers employed may be replaced by iron beams of suitable cross-section, if preferred. The tierods and brace-wires must of course be made of metal in all cases, and the grooved tug wheel or pulley should always .be .made of metal.

While we have described the preferred form of embodiment of our invention, it is to be understood that various changes in the form, proportions, and exact mode of assemblage of the elements exhibited may be. resorted to without departing from the spirit of the invention or sacrificing the advantage thereof. We therefore do not limit our selves to the exact details of construction shown and described, but reserve the right to make changes therein within the scope of the appended claim.

Having thus described the construction and advantages of our invention, what we claim as new, and desire to secure by Letters Patent, is

In a device of the class described, a driven shaft carrying a band-wheel and a tug-wheel, said shaft having a crank, a walking-beam, a pitman connecting said Walking-beam with the crank, a sand-reel-carrying shaft, a permanent support for one end of said shaft, a box forming a bearing for the other end IIO of said shaft, said box having upward and In testimony that we claim the foregoing as downward extending trunnions, a longitudiour own we have hereto aflixed our signatures I nally-slidable frame having bearings for said in the presence of two witnesses.

trunnions, a friction-wheel upon the sand- JACOB C. KNUPP.

5 reel shaft adapted to engage the band-wheel, 7 JAMES G. GREENE.

a brake-block adapted to engage said friction- Witnesses: wheel, and means for manipulating the slid- EDWARD E. HERTZEL,

able frame. I i D. U. ARIUS.

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