US1791107A - Derrick-leg clamp - Google Patents

Description

v w'. `s'Pr-:AKMAN ET Ag l 11,791,107

' Feu 3, 192.1.l

DERRICK LEGV CLAMP .Filed Dec. 16,'1929 Patented Feb. 3, 1931 UNITED Y STATES PATENT oFFl'cE WALTER r. SPEAKMAN ANDGUY 1i. cnocxrmr, or DRUMRIGHT', OKLAHOMA Bannion-LEG CLAMP `Appumnm niea Decembervr 1e, 1929.V serial No. 414,340.

Our present invention relatesto an im?.

In our patented derrick legrclamp, the' shim of the clamp on each le@ sectionof the derrick leg was sectionalized 'thus necessitating the vuse of four shim parts. We proposein accordance withthe features of our present invention to provide a derrick leg clamp construction in whicheach shim comprises a singlepart and in which the space formerly occupied by thes'himparts omitted' is filled by a splicing plate common to both of the leg section ends and disposed in direct contact with the portion. of these ends4r not covered by the 4shims.

, In accordance Vw-it comprising a pairof open sidedshims adapted tovbe securedA tothe abutting ends of-.a

pair of they sections of the'derrick leg and l a clamping construction enclosing the shims comprising two, parts, namely, `a tubular member common toboth of the shims and adapted t0 overlap and enclose both ofthe shims and a splicing plate common to both 351' shims vextending longitudinally of the derrickleginthe open sides of both the shims and the tubular member. f,

Other objects and advantages of our inf vention will more fully appear from ythe fol-V Figure 3 is a viewy partlyin section talren 50 on the line III- III of Figure 1 yand leg.

h the 7 general I. features 25'of our present invention thereis.V provided al four part clamp for-sectional derrick legs` i the flanges 14 of the shims abut each otheras y Figure lis a plan View of'one of the'shims showing it appliedto a section of thek derrick As shown on the drawings: l The reference character 10 designates gen- 55 erally a rod which may take the form of a sectionalized derrick leg. The' associated ends of a pair of sections of thisleg l() abut each Y other asindicated at 11 in Figure 2. Secured to each of these ends is aV shim 12 comprising 6a i a curved or tubular portion'13 disposed about the curved surface ofthe lderrick'leg and a pair vof laterally kextending flangesrlll disposed at substantially right angles to. .each other. 'Ihe tubular portion 13 of each shim 65 issecured to thel corresponding end of the sectional derrickleg 10 by means of rivets 15.

It will, of course,rbe understood that the shims may be secured vto the derrick leg by Ianyother suitable means. In fact the shims may be welded to thederrick leg if ay welded joint is desired..rv I Y' It should be noted that whenA the shims are in place on the derrick leg (Figure'2) indicated at lthus increasing the bearing surface between theabutting ends of thesece tionsy of the derrick leg. That is to say, the bearing surfacell is in realitysupplemented by the bearing surface 16. "This feature isl advantageous in that it increases the vertical load bearing capacityI of thelegsections.

Disposed about and common to both shims is a clamping member 17 comprising a tubular portion 18 encircling the tubular portions 13of the shims and flanges 19 adapted to engage the outer surfaces of the flanges 111 of the shims 12.

The clamping member 17 as wel] as'each of the shims 12 are provided .with open sides as is readily evident from Figures 3 and 4. The open sides of the shims 12 are disposed in Vvertical valignment with each other.

Positioned between the flanges 14 ofthe shims and common to both shims is a splicing or'clamping plate 2O having a curvedportion 2l for engagement withtlie curved surface ofthe derrick leg 10 in the open sides of the shims 12. Thisconstruction results in the plate20 comprising in part a continuaicc tion of the shims as far as the encircling of the derrick leg is concerned.

The clamping plate 2O is provided with laterally extending flanges 22 disposed at substantially. right angles to each other and adapted to engage the inner surfaces of the flanges 14 of the shims 12.

The contactingflanges 19-j 14 and 22- are adapted to be secured together by Ineansof` bolts and nuts 23 which also serve to anchor to the flanges girths and braces 24' such are commonly used in derricl construction.

Attention is directed to the fact that the holes in the flanges 19 and 22., throngliA which the bolts extend are elongated as indicated at.25.in- Figure 2; 'We purposely elongate these openingsin; orde-r to=facilitateathe alignment of' these holes with the bolt apertures 26 in the flanges 141r ofthe shims.

In the; setting up of a derriclY the'A shims are iirstv secured; tlo the ends .off the sections of the derric-lsr legi which are to be connected together; 'lllie tubular member 1.7 is secured.

to the shim onthe lower section-ofthe` derrick leg. In this position the tubular member 17: forms a` socket into which`- the endof the upper leg` section carrying its shim 1i may. be dropped and bolted in place. The elongated holes;25 in.v the flanges 1-9 and A22 facilitate the' alignment ofy these openings'25 with the openings26 in the flanges 14e of the shims as previously explained. Thus it will' be evident thatwhen the clampingy or splic ing plate 20 isproperly aligned with thefull;

length flanges 141 of thel shims the flanges may all' bebolted together by. the bolts` and nuts 23 which also serve to secure. the girths andfbraces: 211x tothe flanges.y

rlhe full lenOth; flanges. of tubular membersA 17 and 2O not only greatly strengthen they joints of the sectionsofv the derriclr legf 105 but aretl'iusA utilized` for the attachmentofgirths-and braces thereto.. llhenY too, as'

previously pointed4 out, the Vertical load carrying, capacity of the leg sections isy greatlyy increased owing to the additionall contact surface 167 between the cooperatingr flanges 141 of the shims.

New, it is, ofcourse, understood that although We have illustrated; and described in detail the preferred embodiment off our invention, the invention is not to be thus limited but only in solar as defined by the scope and spirit of the appended claims.

lNe claim asour invention:

1. A clamp for a sectionaly derrick leg com.- prising shims adapted to be securedv in. fixed relation upon respective abutting ends ofthe sections` of said leg and to enclose only a port-ion` of said ends, a tubular member commonto bothl of and over-lapping said adjacent shims, said shimsand tubular member beingpfor-med with. cooperating'flanges adapt- -ed to be secured together and intermediate to both of and overlapping said' adjacent shims7` saidshims and tubular member being formed with cooperating flanges adapted to lie-secured together and intermediate clamping means adapted to contact the unenclosed portion ot said derriclr leg; disposed between thesides. of each ofsaid shimsfor clamping said! shims. and: tubularl mcmber'toft'hel derrick leg, said intermediate clamping means comprising a clamping plate common to and overlapping'both. of said: shims and adaptedl to fill in thef spaceabet-ween the flanges of the shimsl and the tubular member.

3. A fourepart clamp for'sectional derrick legs comprising a pair of open sided' shimsl adapted to be; secured" to the abutting ends of a pair' of the sections of the derrick legs.

and an open sided tubul'armember common to both of said shims and adapted toA overlap and enclose both of' said shims, andv a splicing plate adapted to besecured to said member common to both shims extendinglongitudinally of the derri'clr leg in the open sidesoff both theV shims'andthe tubular member for completing` the clamp;

41. Aclamp for sectional derrick legs comprisingfshims adapted to be secured'fin fixed relation upon respective abutting ends of' sections ofthe derri'ck leg,` a tubular clamping member adapted to ybe mounted oversaid shims and' means for interconnecting said tube and saidshimslcomprisinga splice plate having'a curved portion for contact with a port-ion of a derrickleg not coveredy by said shims.4

5. A clamp for sectional derrick legs comprising cooperable shims adapted to ybe securedinfixed relation uponthe abutting ends of sections `of the derrick leg, a sectional outer tube constructionadapted'to be mounted over said shims, each of said' shims comprising a member having a cylindrical portion for encircling a portion of the end of the derrick leg andfulllength flanges extending laterally from the sides of said portion.7 said tube havingl flanges adapted to cooperate with the flanges ofA said shims and to be secured thereto.

6. A clamp for a sectional rod' comprising 1 subscribed our names at Drumrght, Creek County, Okla.

WALTER F. SPEAKMAN. GUY E. CROCKETT.

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