US1385659A - Derrick-fitting - Google Patents

Description

R. R. BLOSS AND W. SCHWEMLEIN.

1 DERRICK FITTING. APPLI CAT|0N FILEDKOCT 2, 1920.

1,385,659. Patented July 26, 1921.

wy l/u anm UNITED STATES PATENT OFFICE.

RICHARD RALPH BLOSS AND WILLIAM SCHWEMLEIN, OF PARKERSBURG, WEST VIRGINIA, ASSIGNORS TO THE PARKERSBURG RIG & REEL COMPANY, OF IPARKERSBURG, WEST VIRGINIA, A CORPORATION OF WEST VIRGINIA.

DERRICK-FITTING.

Specification of Letters Patent. Pat t July 2 1921;

Application filed October 2, 1920. Serial No. 414,240.

To all whom it may concern:

Be it known that we, RICHARD R. BLoss and WILLIAM SCHWEMLEIN, citizens of the United States, residing at Parkersbur in the county of Wood and State of West irinia, have invented certain new and useful Improvements in Derrick-Fittings, of which the following is a specification.

This invention relates to derrick fittings, and it comprises a combination'with the leg sections and horizontal girths of an angle iron derrick,vof a'pair of plates adapted to be secured to the ends of the girths, or to one of. the girths or leg sections, said plates being provided with curved flanges on their upper and lower edges adapted toreceive and support the ends of the leg sections.

Der ricks for oil rigs must 'be' provided with derrick fittings ofsimple construction that'can bequickly put in place and removed when the derrick is being erected and disassembled. It is advantageous to provide a construction wherein the rig builder is not depended upon to properlyadjust the parts to obtain a symmetrical structure. A derrick fitting, to be satisfactory, should be constructed in. the shop with the various openings for the reception of fastening means properly placed whereby the derrick, when assembled, will produce a symmetrical structure.

In the present invention, we have provided a very simple form of derrick fitting for use in connection with angle ironv derricks. The invention comprises a pair of plates which may be shop riveted to the girths or to one girth and one leg, the plates 1 being provided with curved flanges for the reception of the ends of the leg sections. The diagonal braces are secured to these plates by means of rotatable blocks having eccentrically arranged openings for the reception of the end of the brace. The parts may be properly assembled and the blocks then rotated to tighten the braces as described in the coendin application of Richard R. Bloss, erial 0. 414,241, filed October 2, 1920.

In the accompanying drawings, we have disclosed one embodiment of the invention. In this showing- Figure 1 is a side elevation of a portion of the derrick showing the derrick fitting in position.

Fig. 2 is a similar viewat right angles to F1g. l, and i I Fig. '3 is a perspective view showin the parts detached.

Referring to the drawings, the reference numerals 1 and 2 designate the upper and lower leg sections respectively of a derr1ck. At the point where these leg sections are 01ned, thederric'k is provided with horizontal girths 3'and4 arranged at right angles to each other. The fittingcomprises a pair of plates5 and 6. The plates may be secured to the girths, or as shown, one of the plates may be secured to the lower leg sect1on and the other to a girth. Any suitable means may be employed for securing the plates 1n position and we have shown them, secured by means of rivets 7, the plates being riveted to the legs and girths in the shop, where the derrick is constructed thus reducmg the amount of work'to be done in the field when erecting the derrick. The upper edges of the plates are provided with curved flanges 8 which receive the upper end of the lower leg section to transmit strains from the derrick structure above the fitting to the leg section. The lower edges of the plates are provided with similar flanges 9 whlch receive the lower ends of the upper leg sections to transmit the strains to the fitting and thence to the lower leg sections.

As shown, the plurality of bolt holes 10 are provided in the plate 6, and the upper and lower leg sections are provided with bolt holes 11 and 12 respectively. Bolts 13 are arranged in these openings when the derrick 1's assembled to secure the parts to 'each other. The bolts are provided with nuts 14 I to retain them in position. A bolt opening 15 1s provided in the plate 5 and the upper end of theleg section 2. The upper leg sect1on 1 is provided with a bolt opening 16. When the derrick is assembled, the relation of the various parts to each other is such that the bolt openings 15 and 16 are brought Into alinement. Bolt 19 is passed through these allned openings to secure the parts to each other, the bolt being provided with a nut 18. The girth 3 is secured to the plate 5 by means of bolts 17 passing through openings 20 and 21 in the girth and plate respectively. The upper end of the diagonal brace 22 which extends from the next lower section of the derrick is provided with a terminal 23 arranged at right angles and extending through an opening" 24 in the plate 5. A cotter pin 26 is passed through an opening in the terminal to secure the end of the brace in position.

The lower ends of the braces are provided with adjustable securing means whereby the .braces may be tightened after the parts are assembled.

As shown, the end of the brace 27 which extends to the next section of the derrick fittin above is provided with a terminal 28 which is extended at substantially right angles and received in an eccentric openlng in rotating block 29. The block is arranged in an opening 30 in the fittin plate and is provided with an extension 31 avin a handle 32. A rin 33 is arranged ont e brace and is adapte to be slipped over the end of the handle when the brace is tightened. The cotter pin 34: is arranged in the opening in the end of the brace to secure it in position.

In assembling a derrick, the parts are arranged with the various openings registering with each other and the bolts are. placed 7 in position. The handle 32 of the rotating block is turned substantially 180 and the end 28 of the brace is placed. in position, the upper end 23 having been previously secured in position and the cotter pin 26 placed in the openingin the upper end of the brace. After the various parts of the derrick have been assembled, the blocks are rotated to tighten the braces and the rings are slipped over the handles to retain them in a tightened position. The parts of the fittin are properly constructed so as to arrange 516 various openings to producea symmetrical structure when the derrick is assembled. It is merely necessary for the rig builder in the field to place the bolts in their proper positions and tighten them and then tighten the braces, the plates 5 and 6 bein shop riveted to the derrickparts. The num er of bolts to'be used. in erecting the derrick isreduced to a minimum and a very efiicient construction is provided.

It is to be understood that while" we have described the preferred embodiment of our invention, various changes in the shape,

size, and arrangement of parts may be resorted to without-departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described our invention, we claim: Q

. 1 A derrick fitting comprising a pair of leg sections and a pair of horizontal girths formed of angle iron, a plate secured to one end of one of said girths, said plate being provided with aportionprojecting beyond the end of the girth, a plate carried by one end of one of said leg sections and projecting laterally therefrom, the other girth being adapted to be secured to said second plate, the ends of said leg sections being overlapped, and means for securing the overlapped ends to the projecting portionof said first plate.

2. A derrick fitting comprising a pair of leg sections and a pair of horizontal girths formed of angle iron, a plate secured to one end of one of said girths, said plate being provided with a portion projecting beyond the endof the girth, the upper and lower edges of the projectingportion of said plate being provided with, oppositely arranged tures in presence of two witnesses,

, RICHARD RALPHBLOSS. WILLIAM SCHWEMLEIN.

/ lVitnesses:

HOWARD S. Drrsorr, HERBERT L. ;POSTLEWAIT.

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