US1759350A - Temper screw - Google Patents

Description

May 20, 1930. GR V 1,759,350

TEMPER SCREW Filed July 2, 192.5

IN VEN TOR.

ATTORNEY Patented May 20, 19 30 1 UNITED STAT-Es PATENT OFFICE v EDGAR E. GREVE, or BELLEvUE, rnNNsYLvANIA, AssIsNoR 'ro OILWELL sUrrLY COMPANY, OF PITTSBURGH, PENNSYLVANIA,"A CORPORATION or PENNSYLVANIA 'rE rER. SCREW Application filed Jul 2,

This invention is for an improvement in temper screws employed in connection with earth drilling apparatus. 7

Temper screws are hung from the Walking beam of a drilling outfit and provide the con:

illustrated. 4 In the drawings, I

nection between the drilling cable, on which the tool stringis carried, and the walking beam. It is adjustable so that the operator may regulate the length of the drilling line in accordance with the progress being made in drilling.

- One of the main Obj ections to present types of temper screws isthat the yoke from which the cable clam'is suspended, is'free to swivel. As the drilling cable is usuallymade of wire rope, this freedom of the clamp to swivel decreases the advantages obtained by the lay of the line, that is, the normal, desired position of the cable. Furthermore, such swiveling of the line is dangerous.

According to the present invention it is proposed to provide a construction, wherein such swiveling is eliminated and wherein neither the screw nor the body which carries the screw is rotated. I

Further objects of the invention are to provide a temper screw of rugged construction whichmay be assembled in a practical manner and which may be conveniently operated; and to provide in a device of this kind, removable thread liners which are'not liable towork loose in operation.

The nature of the invention and its objects and advantages may be understood by reference to the accompanying drawings in which a preferred embodiment of the inventions is Fig.1 is a side elevation of the assembly. Fig. 2 represents a vertical sectionthrough the operating part of the device. v 7

Fig.3 is a transverse section in the plane of line III-IIIof Fig. 2. I

Fig. 4 isv a view generally similar to Fig. 2 of a modified form of thread liner. J

Fig. 5 is a transverse section inthe plane of line VV of Fig. 4.

" Referring to the drawings, 5 designates the temper screw body having a head 6 at its upper end for engagement with a walking beam, such head being-retained in-place by 1925. Serial No. 41,095.

a nut 7 screwed onto the upper end of the body. The lower end of the body 5 is bifurcated to provide spaced apart reins 5 'on the lower end of each of which is a flange 8.

The temper screw itself is designated 9, and is received in the space between the spaced apart reins 5 Retained on the upper end of the temper screw by means of nut 10, and slidably guided by the reins, is across bar 11 to which an elevating line, not shown, may be attached in accordance with the usual practice. w

Above and below' the flanges 8 are ball cages 12 and 13,-respectively, providing a swiveled support for a divided nut, indicated generally as 14. This nut is formed of two longitudinally divided sections 1 1 and 141 Section 14* may have lugs 15'thereon projecting into correspondingly positioned notches p '70 in the section 14 for holding the sections against relative longitudinal movement. The upper ends of each of the sections is enlarged to enclose theball cages,-'as shown,

thus providing the's'wiveled suspension referred to. i

The nut l tis contracted betweenits enlarged upper end and its lower end, and embracing this contracted portion is a yoke16 from one side of which projects a handle 16 Set into the backof the opposed semicirsections 14 and 14' are semi-circular thread liners20. These are provided with suitable ribs, such as 20 that are received in suitable recesses in the respective nut sections for holding the thread liners against relative lone gitudinal movement Or displacement. They may be removably held in place in any suit able manner, as byscrews 21 that pass through cular cavities in the adjacent faces of the the respective nut sections into the liners, as best shown in Fig. 2. Thesescrews may be directly in line with handle 16 and screw handle 17 so that they cannot be removed without first removing handles 16 and'17. This protects the thread liners against acci dental removal byreason of the screws work ing loose. I V p p In the arrangement shown in Figs. 4 and 5,1 have shown -aislightly modified form of thread liner in aconstruction otherwise similar to that described. The parts of the structure corresponding to Figs. 1 and 2 havebeen designated by similar reference numerals, but

the thread liners are indicated at 22. Each of them' has an extension 2290f a hook-like [form at each end that engages over'a rib at each end of the nut'sections, and bolts 23 in these extensions servetosecure the liners in place. Being of semicircular form, they can be readily slipped into the nutsections.

-The lower end of the screw itself projects below the temper screwand terminates in a body button 9*. Belowthe n'utand above the button is a cross bar'or clamp support 24,

this is non-rotatab1e on the screw,'a key 25 being shown for connecting the cross bar to thelower end of the screw. In the opposite ends of the crossbar are notches 26 into which links 27 of the usual type, (shown in dotted lines) are fastened. These links support the 7 cable clamp, not shown. r

With this arrangement, it will be seen, that the sectional nut 1d maybe rotated by means of the projecting handles to raise or lower thescrew and that there can be no rotative movement'between the screw and the temper screwbody. The cross bar 11, of course, prervents the screw from turning in the body while permitting, of the sliding movement thereof. At the'same time, the nut 14 may be easily operated, especially by reason of the ball bearings at12 and 13. I

' While I have illustrated a preferred form of my invention,it will be, understood that such formis to beconsidered as merely illustrative of the invention. 7

I claimasmy invention: 1 r 1. A temper screwancluding a body having reins formed wlth flanged ends, a screw slidably retained in the body, a divided nut ing the latter, a clamp embracing the sections of the nut, means for actuating the nut, and

detachable thread liners carriedby the lower 7 portion of the nut. V

3. A temper screw including a body, a screw slidably retained-in the body, a divided nut swiveled on the body and engaging the screw for effecting a sliding movement there- "of, said nut having an enlarged upper thruse bearing receiving portion surrounding and substantially directly supported on the'lower end of the bodyand a lower portion having threads therein to cooperate with the screw,

said nut being e-ngageable and disengageable with the body when the sections thereof are divided, a clampingyoke'embracing' the sections of the nut, and said screw having a cross bar at one end thereof from which a cable clamp may be hung. Y

4. A temper screw'including abody-hav ing an integral flange at its lower end, a screw slidably and non-rotatably connected with the body, a, nut rotatableand -non-slid able on'the body and engaging the screw for 'adjustably connecting the body and screw) said nut having extended" lateral surfaces above and below said flange,- hearings on the body above and below the flange arranged in contact with said surfaces, and said nut being sectional to permit engagement with the flange and reception of said'bea'rings.

5. temper screw including a body having a head at its-upper endand having its lower end divided to provide a pair of parallel reins, a flange onthe ends ofthe' reins at the lowermost end of the body',a screw associated with the body and having itsupper end received betweenthe reins, a crosshead slidably guiding said screw in-the'body and holding it against rotation with respect thereto, a nut on the body engaging the screw, said -nut being comprised of two vertically divided sections having an upperportion rotatably' fitted over the flange at the lower end of said body, and a lower portion having threads therein to cooperate with the screw, anda clampingyoke embracing the lower part-of the nut.

6.'The combination with a temper screw deviceincluding a body, and a screw slidable and non-rotatable with respect to the body, of a nut for adjustably connecting. the screw and the body, said nut comprising co-operating vertical sections'having upper ends engagingaflangeon the said body to provide 'a swlveled suspension for the nut, said sec-- tlons 'havlng lower POI-MODS 1n which-are on the screw slidably engagingthe reins for thread liners, a clamping yoke embracing the nut sections and non-rotatable withrespect thereto, and an operating screw on the yoke;

. 7 The combination with a temper screw device including abody, and ascrew slidable and non-rotatable with :respectto the body, 7 of'a nut for adjustably connecting-the screwand the body, said nut comprising co-operating vertical sections having upper ends en gaging a flange on the said body to provide a swiveled suspension for the nut, said Seetions having lower portions in which are thread liners, a clamping yoke embracing the nut sections, a handle on the yoke passing therethrough and engaged in one of the nut sections to hold the yoke against rotative movement on the nut, and a second-rotatable handle on the yoke threaded through the yoke and bearing against another section of the nut. 8. The combination with a temper screw device including a body, and a screw slidably and non-rotatably connected with the body, of a sectional clamping nut having a swiveled suspension on the body and projectingbelow the lowermost end of the body, removable thread liners in the projecting portion of the sectional nut and engaging said screw, said liners having flanged. upper and lower ends interfitted with co-operating flangeson the nut sections, bolts for holding the liners in place, a clamping yoke embracing the sectional nut and non-rotatably secured thereto, and operating means on the yoke forv clamping and loosening the nut sections:

In testimony whereof I aflix my signature. EDGAR E. GREVE.

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