US610239A

US610239A - Temper-screw for oil or artesian well drilling tools

Info

Publication number: US610239A
Authority: US
Publication date: 1898-09-06
Anticipated expiration: 1915-09-06

Description

No. 6I0,239. Patented Sept. 6, I898.

P. H. MACK. TEMPEB SCREW FOR OIL 0R ARTESIAN WELL DRILLING TOOLS.

(Application filed Dec. 10, 1897:)

(No Model.)

11V VE 1V T OR.

'6 A TTO/BNE Y.

INITED STATES PATENT FFICE'. 7

PATRICK H. MACK, OF BRADFORD, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 610,239, dated September 6, 1898. Application filed December 10, 1897. 1 $erial No- 661,464. (No model.)

To all whom it may concern.-

Be it known that I, PATRICK H. MACK, a citizen of the United States, residing at Bradford, in the county of McKean and State of Pennsylvania, have invented a new and useful Improvement in Temper-Screws for Oil or Artesian Well Drilling Tools, of which the following is a specification.

The object of my invention is to provide a temper-screw that will be more convenient and much more durable than the ones now in general use. I accomplish this object by the mechanism illustrated in the accompanying drawings, in which-- Figure 1 represents a view of my temperscrew suspended from the end of a walkingbeam. Fig. 2 represents a view of the upper end of the temper-screw at right angles to that of Fig. 1. Fig. 3 represents a View of the inverted T used with the'temper-screw illustrated in Figs. 1 and 2, the shank and crossbar being integral. Figs. 4. and 5 represent another method of constructing the inverted T, the shank and cross-bar being individual pieces. Fig. 6 is another form of the temperscrew T and shows theupper portion of the reins of the temper-screw connected to it.

Fig. 7 is the temper-screw T as shown in Fig. 6. Fig. 8 represents an inside view of one of the reins of my temper-screw. The other rein is similar in construction. Fig. 9 represents a top view of the derrick end of the walking beam.

Similar numerals refer to similar parts throughout the several views.

Numeral 1 represents the end of the walking-beam on which the temper-screw is suspended.

2 is the slot in the walking-beam in which consisting of the cross-bar 4: and the screwthreaded shank 5, provided with the shoulder 6.

7 and 8 are the reins of the temper-screw. They are provided at their lower ends with the one-half of a screw-threaded nut 9 and 10, respectively, in order to engage with the main screw 11, and at their upper ends with the one-half of a screw-threaded

nut

12 and 13, re-

is placed in the groove 3 of the end of the walking-beam 1,and the shank extends down through the slot 2*to such a distance as to allow the connection of the temper screw reins 7 and 8 to swing clear of the walkingbeam, as illustrated in Fig. 6.

The screw-threaded half-

nuts

12 and 13 are duplicates of the screw-threaded half-nuts 9 and 10. The screw-thread of the main screw 11 and the screw-thread of the temper-screw T are the duplicate of each other. The

halfnnts

12 and 13 are provided with the yoke 17, which is shown secured to the half-nut 13 by the bolt 18. The yoke 17 is provided with the set-screw l9 and the lock-nut 20. The reins are connected to the temper-screw T by closing the half-

nuts

12 and 13, so that the screwthreads' thereof will engage with the screwthreads of the shank of the temper-screw T, the lower end of screw-threads of the halfnuts coming in conjunction with the shoulder 6, if the inverted temper-screw.T is used, or with the shoulder21, formed by the head 16, if the upright temper-screw T (illustrated in Figs. 6 and 7 is used.)

The advantage derived by the use of the temper-screw provided with my improvement as described above is as follows: The half-nuts are four and one-half inches long, while the main screw-is from four to five feet in length, which gives it from ten to thirteen times the wearing-surface. It will therefore outwear several sets of half-nuts. The frequent turning of the main screw which sustains the drilling tools and cable causes the screwthreads of the half-nuts engaged with it to wear away, so that in time they lose their friction-grip on the main screw. 7 hen this occurs with the temper-screw now in use, it has to be sent to a machine-shop and be provided with a new set of half-nuts; but with the use of my improvement the driller can at once transfer the yoke 22 to the half-

nuts

12 and 13 and the yoke 17 to the half-nuts 9 and 10. The reins are then reversed, the halfnuts and 12 are connected to the main screw, and the half-nuts 9 and 10 are secured to the temper-screw T, thus giving to the main screw a new set of half-nuts, and thereby doubling the durability of the temperscrew, besides saving the time that would be lost and the expense that would be incurred in sending the temper-screw to a machineshop for new half-nuts.

The benefit derived in the use of a temperscrew provided with inverted temper-screw T, particularly the sectional one, as shown by Figs. t and 5, is as follows: In drilling, after the main screw is run out without stopping the engine, the bull-rope is thrown on the bull-wheels and the slack of the cable is wound upon the bull-Wheel shaft. The instant the cable becomes taut the driller disconnects the clamps 23 from the cable, which continues to wind upon the bull-wheel shaft. It occasionally occurs that the driller is not quick enough to make the disconnection, and the result is that the temper-screw now in general use will be either bent out of shape or broken. With the use of my improvement as shown in Figs. 1 and 2 the reins would be pushed up through the slot f the walkingbeam 1, giving the driller time to either disconnect the temper-screw from the cable or stop the engine before any damage to the tem per-screw can be done.

Having thus described my invention,what I claim as new, and desire to secure by Letters Patent, is-

1. In a temper-screw for oil and Artesian well drilling tools, the combination with the reins consisting of two bars provided at each of their ends with a screw-threaded half-nut, of the yoke 22, and its set-screw, the yoke 17, and its set-screw, and the screw-threaded temper-screw T provided with a shoulder at the base of the screw-thread, substantially as shown and described.

2. A temper-screw frame, consisting of two reins, each rein provided at its upper and lower end with a half-nut, the half-nuts being provided with internal screw-threads all of the same dimensions, and each set of halfnuts being provided with a yoke and setscrew substantially as shown and for the purpose herein described.

PATRICK H. MACK.

Witnesses:

ANDREW Ross, M. H. BYLES.