US1755572A - Pipe holder - Google Patents

Description

p il- 30. w. 1.. CHURCH 1,755,572

PIPE HOLDER Filed July 5, 1927 2- Sheets-Sheet 1 IN VEN TOR.

April 22, 1930. w. 1.. CHURCH 1,755,572

" PIPE HOLDER Filed July 5, 1927 2 Sheets-Sheet 2 l3 l2 l5 Patented Apr. 22, 1930 U'NiTso smiles rarsmrorncs HousromITEXAs, ssienon OF ONE-HALF 'ro WILLIAM L. Y I Pu man, onHoUs'roN, TEXAS PIPE nornna Application filed July 5, 1927;. Serial No. 203,341.

This-invention relates to-new and useful improvements in a pipe holder.

One object of the invention is to provide a device of the character described specially adapted to engage and hold a pipe suspended in a well bore.

' Another object of the invention is to provide a pipe holder of the character described whieh is specially, designed to be mounted on arotary table, of arotary drilling machine, or other support and which is adapted to en- I gage with and support a pipe suspended in a well bore, and which may be released, while sustaining the load of the pipe, so that it will disengage the pipe so held.

further feature of the invention is to provide a device of the character described adaptecl'to rest on suitable support, and to be engaged around a pipe to besuspended in in a well bore, and which embodies means for quickly and easily releasing the holder,

while sustaining the load of the .pipe, to permit itsdisengageme'nt from said-pipe.

Withthe above and other objects in view this invention has particular relation to certain novel features of construction, operation and arrangement of parts,- ai -example of which is given in this specification and illustrated in the accompanying drawings, wherein: I

Figure 1 shows a plan view of the holder. Figure 2 shows a side elevation thereof, partly in section. V

Figure 3 shows a fragmentary side elevation of a securing bolt employed.

Figure 4 shows a sectional view of the holder taken on the line 44 of Figure 1. Figures 5 and 6, respectively show front and side elevations of a modified form of releasable securing meansemployed, and

. Figure 7 shows a plan view of another from of such securing means.

Referringnow more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures the numerals 1 and 2 designate the confronting arcuate sections of the spider, said sections being hinged together, at one side,-by the hinge pin 3, and at the. other sides being formed with the outwardly turned facing jaws 4, 5v which fit-together when the holder is engaged around the pipe to be held.

The bottom of the spider is formed with a relatively wide annular base 6, whose bottom is smooth and thus. adapted'to rest on a rotary table or other suitable support.

The'spider is formed with a downwardly converging seat 7 adapted to receive the pipe engaging slips as 8. p In the drawings four of these slips are shown but a greater or less number may be employed. The slips are arcuate in horizontal cross sectional view and are downwardly tapered, or wedge shaped and their outer surfaces are formed to conform to the contour of the seat 7. Their inner surfaces are preferably formed withpipe engaging teeth, as 9. Their outer sides have vertical tenons 10, preferably. dovetailed in cross'section, which fit into correspondingly shaped mortises 11, in which they are vertically movable. The upper end of each slip 8 has an outwardly extending flange 12 which overlies the spider and has a bearing 13 and pins as 14 have their lower ends anchored to the top of the spider and work through said bearings and coil springs 15 surround the respective rods and. are interposed between the upper end of the spider and the respective flanges 12.

Releasable means are provided for holding the spider secured around the pipe to be held. A preferred form of such means is shown in Figures 1, 2 and 3. This form of holding means comprises a bolt 16 which is fitted 85 through the jawA: and one end of which is formed with 'aretaining head 17. This bolt is fastened in the j aw 4 by means of a pin 18 -As shown in Figures 5 and 6 there is a U shaped latch 25, the free end of whose side arms embrace and are pivoted to the jaw l and the cross bar of said latch25 has a set bolt 26 threaded therethrough. When in securing position this latch may be swung around so as to embrace, also, the aw 5 and the set bolt 6 then screwed against said jaw 5 to holdthe sections of the spider in pipe holding position. This bolt may be unscrewed to release said spider sections and the latch 25 then swung around clear of the jaw- 5 and the spider then swungopen. f

In the form shown in Figure 7 a releasable securing means is provided comprising the upper and lower links as 27 which are pivoted,

at one end, to one ofsaid jaws and pivoted between the other ends of said links there is a toggle lever 28, whose outer end is formed with a hand grip and whose inner end is adapted to engage the other jaw to hold the sections of the spider around the pipe to be held. When it is desired to release the spider to permit it to open the outer end of the toggle lever 28 may. be swung outwardly and the links 27 swung clear of the opposite j aw.

In use the pipe holder may be mounted-on a rotary table or other support and applied to the pipe to be held and secured around said pipe, a manner 'hereinabove indicated. As the pipe is lowered it will frictionally engage the slips 8 and said slips will be carried downwardly and inwardly and will wedge between the pipe and the spider seat 7 and will securely grip and hold the pipe. When it is desired to release the pipe the nut 22 may be given a partial turn and this will release it from the bolt 16 and the spider may then open to release the jaws 8 to the influence of the springs 15 and said jaws will be thereby elevated and moved outwardly from the pipe.

In case the securing devices, as shown in Figures 5 and .6 orin Figure 7 are employed the spider sections may be released as hereinbet'ore indicated. e

The spider sections may be readily released while the full weight of the pipe is being sustained by the holder.

The spider has the oppositely disposed bails 29, 29, which form convenient engaging means for hooks or other instrumentalities in moving the holder about the derrick.

While I have shown whatI now consider preferred forms of the device it is of course obvious that various mechanical modifica-' stantially wider than any other portion of the spider so that the same may be seated on a rotary table and having a downwardly converging seat, separate wedge shaped slips in said seat, yieldable means supporting the respective slips on the spider, and releasable securing means associated with the jaws and adapted to secure the sections of the spider about the pipe, to be held said securing means comprising a link pivoted to one jaw and a toggle leverpivoted to said link, ,oneend of which is adapted to engage the outer side of the-other jaw and whose other end is formed with a hand grip. V 3 l 2. A pipe holder including a spider formed of sections hinged together, at one side, and having outwardly turned jaws at the other side, said spider having a base portion adapted to rest on a rotary table and wider than the spider above and having a downwardly converging seam-independent arouate, wedge shaped slips in said seat adapted to surround the pipe .to be held and to sustain the weight thereof, said seat and slips being formed, one with grooves and the other with tenons adapted to fit into said grooves, yieldable means supporting the slips on the spider and releasable securing means associated with the jaws and adapted to secure said spider sections about the pipe to be held said releasable means comprising a pair of links pivoted at one end to one of said jaws and a toggle lever pivoted between the links and adapted to releasably engagethe outer side of the other jaw.

I 3. A pipe holder including a spider formed of sections hinged together at one side, said sections having outwardly turned confronting jaws at the other side, said spider having a toone jaw and a toggle lever pivoted to said link and engageable with the other jaw, said securing means being adapted to be released, while the weight of the pipe is sustained by the holder, to permit the release of said slips from the pipe, each slip and the seat being provided, one with a substantially vertical groove and the other with a rib adapted to fit into said groove.

4. In a pipe holder a spider formed of sections hinged together at one side and having outwardly turned jaws at the other side and having a base portion wider than any other portion of the spider sothat the same may be seated on a rotary table and said spider having a downwardly converging inside seat, a link connected to one jaw and a toggle lever pivoted to said link and engageable with the other 7 jaw.

In testimony whereof I have signed my name to this specification.

WALTER L. CHURCH.

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