US1614813A - Temper screw - Google Patents

Description

1927 1,614,813 Jan F. A. TURNER TEMPER SCREW Filed April 14. 1925 2 Sheets-Sheet 1 34/ 44 it. fnvefiior 137 v 7 li'eakgek''aila'wer Jan. 18, 1927. 1,614,813

' F. A. TURNER I TEMPER SCREW Filed April 14. 1925 2 Sheets-Sheet 2 Patented Jan. 18, 1927.

STATES FREDERICK a. TURNER," or oxnunonn, OKLAHOMA.

TEMPER SCREW.

Application filed April 14, 1925. am No. 23,156.

This invention relates to temper screws for oil .welldrilling rigs. An important object of the invention is to provide a device of this character in whichthe necessity for the operatorsconstantly climbingup and down to make adjustments thereof is eliminated.

As is wcll known to those familiar with the art, in the ordinary type of temper screw, it is necessary that a platform be built upon the derrick floorwhich isusually known as a three story stool. This platform is arranged adjacent the walking beam and must be ascended each time that theordinary temper screw is adjusted as to lengthas itmust be at frequent intervals. This not only results in a loss of time but necemitates interruption of drilling and accordingly an importantobject ofthis invention is to provide not only apdevice which. may be adjusted without the necessity of ascendingjthe plat form forthe adjustment, but, which may be, if so desired, adjusted while the drilling is beingcarried on; I

A further object ofthe inventionv is, to provide a device of this character which may be very cheaply and readily produced and which will requireno changes whatever in the present drillingapparatus] These and other objects. Iattain by the construction shown in. the accompanying drawings, wherein for the purpose of illus: t-ration is shown apreferred embodiment of .my invention and wherein Figure 1 is a side elevation partially in section-of a temperscrew. constructed in ac cordance with my invention;

Figure 2 is a front elevation thereof;

Figure 3 is a perspective of the upper guide for the stem;

Figure 1 is a perspective of the plate forming one bearing for the stem and a portion of the housing for the gearing; and

Figure 5 is a fragmentary side elevation showing a modified form of operating mechanism.

Referring now more particularly to the drawings, the numeral 10 indicates the usual walking beam having its ends slotted, as at 11, and its upper surface notched, as at 12, for coaction with the T head'13 formed upon the yoke 14 of the temper screw. The construction of this T head is in no manner altered. The yoke comprises a substantially and vertically extending side walls 16, the lower ends of which are enlarged, as at 17, to the same width as the base, The base and the enlarged portions 17 arcconnected by sideplates 18 and the upper surfaces of the enlarged portions areconnected by a top plate 20 which is notched, as at 21, to receive the sides 16above the enlarged portions 17 g The base .15 and top 20 have formed therein aligned openings 22 and'23. Directed through these openings is a worm having lat its lower end a head 24 upon which is seated a cross bar-25 notched at its ends, as at26, forthe reception of links 27 of the usual temper screw clamp. The worm adjacent the headand at the point of its passage through this cross bar is-preferably squared, as at 28,. so thatrotation of this cross-bar upon the screw is prevented. I I r 7 At its upper end, the, cross baris likewise squared, as indicated at 29, and has mounted upon this squared portion and secured inpov sition by a nut 30 vof a .guidebar. 31,.the ends. of whichare notched,,.as, at 32, for slidable engagement with the sides 16 0f the, yoke. Seated uponthe base 15 about the opening22is a thrust. bearing 33. vEngaging; this thrust bearing with its lower ends is a.

worm nut 34 having secured thereto; a bevel gear 35. It will .be'obvious thatthis worm.

is held against rotation and is mounted for vertical movement upon the yoke andthat this vertical movement canbe impartedby; rotationv of the worm nut 34. Secured to the yoke adjacent the base thereof andextending outwardlytherefrom is abrace attached to the yoke at a point spaced from its lower end and inclining outwardly and downwardly therefrom is a second brace 37, the lower end of which is vertically extending, as at 38, and is rigidly secured to the outer end of the brace 36. Aligned openings are formed in this vertically extending portion 38 and the opposed enlargement 17 of the side wall and in these openings is rotatably mounted a shaft 39, the inner end of which has secured thereto a bevel pinion 40' meshing with the gear 35.

The vertical extension 38 of the brace 38 may be of any desired length and has mounted thereon adjacent its lower end means for rotating the shaft 39. In Figures 1 and 2 this means consists of a stub shaft 11 having rotatably mounted thereon a rectangular frame having a broad base 15 sprocket 42. The outer end of the shaft 39 has a sprocket 43 connected with the sprocket 42 by a chain 44. Thesprocket 41 is suitably handled, as at 45, so that it may be rotated. In the form shown in Figure 5, a vertically extending'rotatably mounted shaft 46 is provided having at its lower end a handle 47 by means of which it may be rotated and at its upper end a bevel gear 48 meshing with the bevel gear 49 carried by the shaft 39. It will be obvious that by extending the cont-rolling operating elements for a desired distance, the temper screw may be operated from the floor and during the drilling operation if this is found desirable.

Attention is directed to the fact that by the construction above described, the ordinary swivel cross bar or drilling clamp hanger is eliminated for the reason that the worm supporting the drilling line does not rotate.- In the ordinary construction, where this worm rotates, it is necessary that a swivel be provided to prevent twisting of the drilling line. The swivel alone will not accomplish this purpose and it is necessary to provide in addition to the swivel what is ordinarily referred to as a jockey stick one end of which is secured to a fixed partof the derrick or drilling apparatus and the other end of which is secured to the swivel to prevent the same from rotating. This stick during drilling is, of course, reciprocating and is dangerous in that it might become loosened and in falling injure some one upon the derrick floor.

It will also be obvious that the construction hereinbefore set forth is capable of a considerable range of change and modification without materially departing from the spirit of my invention and I accordingly do not'limit myself to such specific structure except as hereinafter claimed.

I claim 1. In a, temper screw, a yoke provided at its upper end with means for engagement with a walking beam, the yoke embodying spaced arms on the housing connecting the lower ends of the arms of the yoke, 3 x12;

tically extending worm shaft arranged between the arms of the yoke and having its lower end directed through the housing, a worm nut engaging the worm within the housing and including a gear, brackets carried by the yoke including a vertical extension extending considerably below the lower end of the yoke, a shaft mounted in said bracket and having one end extending into the housing and provided with a gear for engagement with the gear of the worm nut and means at the lower end of the extension of the bracket for rotating said shaft, the upper end of said worm shaft being square and a guide engaged with the squared portion of the worm shaft and having its ends notched for engagement with the arms of the yoke to thereby permit longitudinal movement of the worm shaft and prevent rotation thereof.

2. In a temper screw, a yoke provided at its upper end with means for engagement with a walking beam, the yoke embodying spaced arms on the housing connecting the lower ends of the arms of the yoke, a vertically extending worm shaft arranged between the arms of the yoke and having its lower end directed through the housing, a worm nut engaging the worm within the housing and including a gear, brackets carried by the yoke including a vertical extension extending considerably below the lower end of the yoke, a shaft mounted in said bracket and having one end extending into the housing and provided with a gear for engagement with the gear of the worm nut, means at the lower end of the extension of the bracket for rotating said shaft, including a stub shaft mounted at the lower end of said extension, a sprocket gear mounted on said stub shaft and having a handle whereby it may be rotated, a sprocketgear rotatably mounted in the brackets and a chain connecting said sprockets.

In testimony whereof I hereunto aliix my signature.

FREDERICK A. TURNER.

Images