US1599742A - Derrick construction - Google Patents

Description

Sept. 14 1926. L599j742 B. B LACK DERRICK CONSTRUCTION Filed DeC- 2l. 1925 2 Sheetsshee1- 1 Sept. /14 1926.

2 Sheets-Sheet 2 IN VEN TOR.

M ATTORNEY Patented Sept. 14, 1926.

UNITED STATES PATENT l'FlCE.L

BURTON BLACK, OF REDONDG BEACH, CALIFORNIA, I'SSIGNOR 0F.0l\TE-SI15.TH I FREDERICK L. FEISTIIAMEL, ONE-SIXTH TO .ARTHUR J. CARR, AND 0NE.IXT1-I IG THOMAS A. COLLINS, ALL 0F LOS ANGELES, CALIFORNIA.

DERRIGK CONSTRUCTION.

Application4 filed December 21, 1925. Serial No. 76,846.

This invention relates to improvements in derriclr construction, and is particularly di rected to the general type of derrick structures usuallyemployed in the drilling and operating of oil, gas and like wells.

lvIore specifically, the present invention is directed to certain improvements in the conn struction of the type of panel derriclr disclosed in my copending application, Serial No. 68,208, filed November 10, 1925, and has for an object to provide an improved method of constructing the several panels so as to permit a closer intermeshing of the several adjacent panels at the corners of the derriclc. and so as to provide more rigid corner posts or legs.

It is a further object to so construct the several panel sections of the derrick so that in the assembled derrick thev girts anc braces will be clamped between the adjacent leg members. Various other objects and advantages will be more fully apparent from the following description of the accompanying drawings which form a part of this disclosure, and which illustrate a preferred form of the embodiment of the invention.

Of the drawings:

Fig. 1 is an elevation of aderrick of the general type to which the present invention is directed.

, Fig. 2 is an enlarged plan section, partly broken, taken on line 2-2 of Fig. 1. j

Fig. 3 is 'an elevation of asingle panel section of the form utilized in two opposite sides of the derrick 'y Fig. 4 "is a similar elevation of a single panel section of the form utilized in the other two sides of the derrick.

j Fig. 5 is an enlarged detailed section taken on line 5 5 of Fig. 1.

In the construction disclosed in my pre vious application, above identified, the several girtsand sway braces of each panel section are secured to the respective angle iron leg members by bolts or rivets having projecting heads, and in such a manner that when the adjacent sections .are assembled with the angle-iron leg members of said sec'- tions in intermeshing relation, said angleiron leg members clamp against the adjacent bolt or rivet heads.

In certain instances it has been found that it is more desirable to so construct the panel sections that When assembled together in a derriclr, the ends of the several girts and sway braces will be directly engaged by and be clamped rigidly between the two angle-- iron leg members at each corner of the derrick, this being most effectively accomplished by securing the girts and braces to the respective leg members by bolts or rivets having countersunk heads.

In a derrick of this general type of construction, each of the four sides is formed of a plurality of panel sections secured together in vertical alignment with the several sections of the respective sides of suitable dimensions to produce a completed derrick gradually converging or tapering upwardly to the derrick top.

The panel sections A (see Fig. ll) of two opposite sides of the derriclr are of relatively similar construction and the panel sections B (see Fig. 3) are also of relatively similar construction, but slightly different from the panel sections A; thereforeit will suiiice herein to describe in detail onlyone of each of the sections A and B.

Each panel section A comprises opposite angle-iron leg members a disposed vertically at slightly converging angles corresponding to the general taper of the completed derrick, lower and upper transverse marginal girts 2 and 3 (so-called because they forni the lower and upper margins of the panel), an'intermediate transverse girt 4, a lower pair of diagonal sway braces 5 and 6, and an upper pair of similar diagonal sway braces 7 and 8, there being also provided vertical reinforcing braces 9 if desired.v These girts and braces may be formed of angle-iron and swaged at their opposite ends to bring both flanges thereof to parallel Contact, thus providing securing ends of double thickness or they may be formed of fiat or other shaped material. rIhe opposite ends of the respective girts and braces are bored or punched to receive the securing bolts or rivets and are positioned to engage the inner faces of the adjacent flanges of the respective leg members a, said girts and braces being secured in place preferably by bolts and nuts with the bolt heads counter-- sunk into the inner surfaces ofthe respective girts and braces and the associated nuts tightened against the outer faces of the respective ,leg members. (See particularly ico Fig. 2.) These several bolts are designated by reference characters consisting of a suffix added to the numeral designating the 'respective parts they secure to the leg members, thus bolts 2a secure the transverse marginal girt 2 to the lower ends of the leg members a, the bolts 3a secure the transverse marginal girt 3 to the upper ends 'ot said leg members, while the bolts es, 5a, 6a, 7 and 8qu secure the intermediate girt and respective diagonal sway braces to said leg members.

nach panel section s comprises Opposite angle-'iron leg members o, lower and upper transverse marginal girts l0 and ll, an intermediate tranverse girt l2,a lowe'r pair ot'diagonal sway braces 13 and le, an upper pair ot diagonal sway braces l5 and lo, and vertical reinforcing/'braces il?, ijt desired. All of these girts and braces are or' the same construction as Ythose ot the panel section il.. Howeventheir ends are secured by bolts and nuts to the outer faces of the adjacent flanges voit the respective leg members b, instead ot to the yinner faces `as are the girts and braces ot the sections A, the headsol' said bolts being counter-sunk into the outer surfaces of the respective "gir-ts and braces and the associated nuts tightened against the inner faces ot the respective leg members. (See Fig. 2.) Bolts l0 vsecure the lower marginal girt lO to the lower 'ends of the respective leg members b, bolts lli secure the upper marginal girt ll to the upzp'ei' ends of the respective leg members 5 while bolts 12a, 13a, la?, l5u and lGL secure the intermediate girt l2 and the respective diagonal sway braces to the leg members Z).

"Withparticular `reference to Figs. l and 5, it will be noted that in the co'nrpleted derrick the several panel sections comprising each side of the derrick are vertically aligned one upon the other with the lower marginal girt of each section engaging the upper marginal girt of the next lower section and that the coengaging marginal girtts are secured together by bolts 1S.` As shown in Fig. 5,7the adjacent A and sections overlap ,eachother lby one-halfl their respective heights, thus bringing the joints 19 between the vertically adjacent A sections in regular staggered 'relation to the joints 2O between theA vertically adjacent B sections.

Referring now more particularly to Fig. 2 oi" the drawings, it will be noted that the panel sections il are assembled with the panel sections B so that the angle-iron leg members a have an intermeshing or overlapping engagement with the angle-iron leg members?) of the panel sections B, and Ythat the linner flat surfaces of ythe ends of respective girts and braces ot the sections A engage the outer 4faces jot' the leg members o of the sections B, while the outer flat surfaces of the ends of the respective girts and braces of the sections B engage the inner faces 'of the leg members 'a ot the sections A. rl"hu`s when the leg members are secured together, as will be explained, 'the ends of the Vgirts and braces will be 'rigidly clamped between the companion leg members at each corner of the derriclr. rlhis distinguishes from the construction disclosed in my previous application in which the leg members clamped against both heads and not against the ends ot' the girts and braces, and is of material importance in preventing a shearing of the bolts by reason of excessive vibra'- tion and in producing 'a 'more rigid and durable construction. y

l 'VVit-h the panel sections thus assembled, the nested leg members 'are secured together at intervals by bolts A and B', 'each of said bolts extending `through apertures 2l in the flanges of both leg members a and 'Z9 "of each corner post ol'1 the derriclr. l Y

From the above it 'will be seen that the present invention provides a derrick c'onstruction having corner legs each lconsisting of two inteimeshing angle-iron lieg r'nientbers, and connected braces and girts arranged to be rigidly clamped between and secured to said leg members vso 'as to relieve the securing bolts ol detrimental vibratory influences and providing a very rigid and durable construction. y

While the specilic embodiment here-in illustrated `and described ifs fully capable ot 'uliilling the objects primarily'7 stated it to be 'understood that l do not wish to re'- st'rict the invention in this regard, for is susceptible 'of 'embodiment in various other forms, all coming within the scope oi the claims which follow. Y

I claimk as 'my invention: i

1. In a derril; of the nature disclse'd, the combination of: relatively spaced corner legs each compri'sing` a double string of longitudinally 'aligned leg members; transverse g'irts and braces forming the respective sides 'of the derrick and having their opposite ends disposed between the adjacent companion leg members; and Vmeans ttor clamping said girts and `braces between 'said leg members. y l t Q. In a derrick ol the nature disclosed, the combination of:l relatively spaced corner ,legs each comprising a 'double string ot longitudinally aligned angle-iron le'g inembers, one string nested within the 'other with their lflanges in parallel relationship with the adjacent sides 'of 'the derricl; transverse girts and braces forming the respectivevsides of the derrifcl; 'and having ltheir opposite ends disposed between the 1Jflanges 'ofthe adjacent leg members; an'dlmeans lor ldrawing said ieg members together 'tio clamp said girts and braces.

3. In a derrcl'z of the 'nature disclosed', the combination of: relatively spaced corner Cfl lil)

legs each comprising a double string of longitudinally aligned leg members; transverse girts and braces forming the respective sides of the derrick and having their opposite ends disposed between and in contact with the adjacent companion leg members and secured to one of said leg members; and means for drawing said leg members together to clamp said gir-ts and braces.

il. In a derrick of the nature disclosed, the combination of: Vrelatively spaced corner legs each comprising a double string of longitudinally aligned angle-iron leg members, one string nested within the other with their flanges in parallel relationship with the adjacent sides of the derriclr; transverse girts and braces forming the respective sides of the derrick and having their opposite ends disposed between and in Contact with the flanges of the adjacent leg members and secured to the flange of one of said leg members; and means for drawing said leg members together to clamp said girts and braces. I

5. In a derrick of the nature disclosed, the combination of: relatively spaced corner legs each comprising a double string of longitudinally aligned angle-iron leg members, one string nested within the other with their fianges inparallel relationship with the adjacentsides f the derriclr; transverse girts and braces forming the respective sides of the derriclr and having their opposite ends disposed between the flanges of the adjacent leg members, the girts and braces of two opposite sides of the derrick being secured to the outer faces of the adjacent flanges of the inner leg members and the girts and braces of the two other sides of the derrick being secured to the inner faces of the adjacent fianges of the outer leg members; and means engaging through both flanges of the several leg members for drawing them together to clamp' the girts and braces.

6. ln a derrick of the nature disclosed, the combination of: relatively spaced corner legs each comprising a double string of longi tudinally aligned leg members; transverse girts and braces forming the respective sides of the. derrick and having their opposite ends disposed between and in contact with the adjacent companion leg members, said girts and braces being secured at each end to one of said leg members by a countersunk bolt; .and means for drawing said leg members together to rigidly clamp said girts and braces.

7. A derrick having double leg members; girts having their ends disposed between said leg members and secured to one end thereof; and means for drawing said leg members together to rigidly clamp said girts.k 8. A derriclr having double leg members; girts having their ends disposed between said leg members and secured to one end thereof by countersunk bolts so as to permit the companion leg member to contact said girts; and means for drawing said leg mem`- bers together to rigidly clamp said girts.

lIn testimony whereof, I have hereunto set my hand at Los Angeles, California, thisl th day of December, 1925.

BURTON BLACK.

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