US1600864A - Well-casing spider slip - Google Patents

Description

Sept. 21 1926.

R. c. BAKER WELL CASING SPIDER $1,11

Filed May 10, 1926 INVENTOR 6'. fialter 21 a Pate'nted Sept. 21, 1926. i I

UNITED STATES L 1,600,864- PATENT OFFICE.

REUBEN' C. BAKER, Oil? COALINGA, CALIFORNIA, ASSIGNOR TO BAKER CASING SHOE COMPANY, OF HUNTINGTON PABK, CALIFORNIA, A CORPORATION OF CALIFORNIA.

WELL-CASIN G SPIDER SLIP.

, Application filed May 10,

The present invention relates to improvements in well casin spider slips and has for an object to provi e a simply constructed, easily transported and handled slip for the gripping of well pipe in which great flexibility will be had between the various/ sections of the slip in order to permit such sections to accommodate themselves to the pipe.

With the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto.

In the drawings, wherein like symbols 5 refer to like or corresponding parts throughout the several views,

Figure 1 is a top plan view of a spider slip constructed according to the present invention.

I Figure 2 is a vertical section taken on the line 2 2 in Figure 1.

Figure 3 is a similar section taken on the line 33 in Figure 1. a

Figure 4 is a fragmentary cross section 25 taken on the line 4-4 in Figure 1.

Figure 5 is a similar section showing a slight modification, and

Figure 6 is a perspective View showing the flexible bar link connection.

Referring more particularly to the drawings an improved slip is made up in two units. Each unit can be carried in one hand, such units bein provided with the handles 7 and 8 respectively. The unit having the 35 handle 7 is composed of the two sections 9 and 10; while the unit adapted' to be carried about and transported by the' handle 8 is composed of the twocomplemental sections 11 and 12. p The handle 7 is pivotally connected to the section 9 as by having its inwardly turned end engaging through the head of a screw or bolt 13 mounted in the upper larger end of said section 9. In a similar mannerthe other arm of the bail or handle 7 is engaged pivotally through the head of the bolt or screw 14 in the companion slip section 10.

In a similar way the handle 8 for the opposite unit is pivotally coupledto the respective sections 11 and 12 by use of the bolts or other fastening means 15 and 16. These various bolts or other fasten-ings preferably enter the top portions of the sections at in termediate parts thereof.

The sections 9 and 10 of the one unit are 1926. serial No. 108,104.

flexibly coupled together by the bars or links 17 shown more particularly in Figure 6, such bars being preferably made of flexible metal and also preferably though not necessarily of a round cross section. The 0 posite ends .00 of the link or bar '17 are turne at substan-' tially right angles to provide the trunnions 18 and 19. These trunnions enter the sockets 20 made in the respective slip sections; one trunnion 18 for instance fitting in the socket of the section 9, while the other trunnion 19 of the same fits into a similar socket in the companion slip section 10. The slip sections are, of course, arcuate inform and the flexible link or bar 17 is of like form and these links or bars are preferably mounted at both the upper and lower ends of the sections as indicated in Figures 2 and 3.

In the case of the upper links, the trunnions are directed downwardly'while in the case of the lower links their respective trunnions are inserted upwardly into the sockets in the sections. The links may be held to the sections and with the trunnions in the sockets as for instance, shown in Figure 4, where V- shaped channels 21 and 22 are made in the outerifaces .of the slip sections adjoining the trunnions, but leaving the walls or lugs 23 and 24 at the sides of the sockets 20. These walls are intended to be headed over upon the links 17, ,whereby to hold such links in place.

An alternative method is shown in Figure 5 in'which the walls or lugs 23' and 24 are left in,the initial position and a washer or bolt head 25 is arranged to overlie the socket or channel in which the flexible link is placed. This will prevent escape of the link from the socket or channel. The washer 25 may be held in place by means of a bolt 26 threaded into the slip section. The side walls of adjoining units are unconnected so that one unit maybe carried in one handby means of the handle 7 and the other unit in the other hand bythe handle 8. 190 When the slip sections are brought together u to be placed in the frusto-conical head, the outer walls of' such sections being tapered for this purpose, the two units are brought together-and they are guided by the use of 105 the dowel pins 27 carried by one of the units engaged in sockets 28 formed in the side faces of the sections of the other unit.

The spring steel bars or tie links .17 ermit of flexibility while holding the half units no together. The dowels cause a lining of the twounlts when dropping same into place in the spider around the tubing.

ically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims :v v

. What is claimed is 1. A well easing spider slip comprising a plurality of units, each unit composed of a pluralit of sections, a handle for carrying each unit separately, flexible connections for the sections of each unit, and disconnectible means between the units for alining'the units just prior to inserting the same in a spider, said disconnectible means acting toermit circumferential relative movement 1n the units when in the spider but preventing relative longitudinal movement of said units. I

2. A well casing spider slip comprising a plurality of units, each unit composed of a lurality of sections, flexible links connectmg the sections of each unit permanently together, handles coupled-to each unit, and

pointed dowels and sockets mounted between the units for permitting of separation thereof and for alining and guiding the units when entering the spider.

3. A well casing spider slip comprising a plurality of detachable units, separate-handles for carrying each unit, each unit composed of a plurality of sections, separable means for guiding the units together and alining same prior to inserting the units in a sp1der,.sa1d separable means preventing longitudinal relative movement of the units but permitting circumferential movement thereof, and flexible links having trunnions fitting into the adjacent sections of the same unit. v

4. A well casing spider slip comprising a plurality of slip units, each unit composed of aplurality of sections, means for alining said units when'brought together for entrance to a spider, said sections having sockets and cut away portions with walls between the cut away portions and sockets, and flexible links having angularly turnedtrunnions -fitting into said sockets and within said walls, said sections having means to hold the links in place. 1

REUBEN C. BAKER.

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