US1551082A - Derrick iron - Google Patents

Description

` *Y V w w Aug. 25, 1925.

D. D. BAXTER DERRICK IRON Filed July 16, 1923 n INVENToR.

ATIORNEY.

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Patented ug.

UNITED STATES PATENT OFFCE.

DONALD D. BAXTER, OF APPERSON, OKLAHOMA.

DERRICK IRON.

Application filed .Tuly 16, 1923. Serial No. 651,872.

To @ZZ whom t may concern:

Be it known that I, DONALD BAXTER7 a citizen of the United States, residing at Apperson, in the county of Osage and State of Oklahoma, have invented certain new and useful Improvements in Derrick Irons, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to dei-rick irons.

An important object of the invention is to provide irons for connecting the adjacent ends of legs of derricks and having means for supporting the girts and braces of the derrick.

A further object of t-he invention is to provide a device of this character so constructed that the application of the iron does not weaken the derrick to any appreciable extent.

A still further object of the invention is to provide a device of this character which consists of plates bolted together, these pla-tes permitting removal of the sections of the derrick upon loosening of the bolts thereof and without removing these bolts.

A still further object of the invention is to provide a device of this character which may be cheaply and readily produced.

These and other objects I attain by the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention and wherein z-e Figure 1 is a side elevation showing a derrick embodying irons constructed in accordance with my invention;

Figure 2 is al perspective view of the outer plate of a side iron;

Figure 3 is a side elevation of a side iron applied;

Figure 4 is a plan view of the side iron applied, the upper leg section of the derrick being removed;

Figure 5 is a side elevation of a top iron;

Figure 6 is a section on the line 6 6 of Figure 5;

Figure 7 is a perspective view of the outer plate of the top iron; and

Figure 8 is a perspective view of the end portion of a girt.

Referring now more particularly to the drawings, the derrick irons illustrated may be divided into two classes, side irons 10 and top irons 11. Each of the irons comprises an outer plate 12 of angle iron, the arms of which are each of a length greater than -the thickness of the derrick leg 13 to which the device is to be applied, and a second angle iron plate 14, the arms of which are bent intermediate their ends to form outstanding ianges 15. The flanges 15 and the free ends 16 of the arms of the angle iron 12 are provided with aligning bolt receiving openings 17 through which are directed clamping bolts 18 for clamping the plates 12 and 14 against diagonally opposed corners of the derrick leg 13.

In the construction of the side irons the outside plates 12 have flanges 19 struck inwardly therefrom adjacent the lower end thereof but at points spaced from this lower end, these points being arranged in the same plane. Adjacent the upper end but spaced therefrom the outside plates have struck outwardly therefrom at opposite sides of the angle and adjacent to this angle flanges 2O having openings formed therethrough, as at 21, for the reception of the securing elements of a gin pole. The upper end of each leg section, with the exception of the uppermost leg section, is provided upon its two outer faces with notches 22 upon the lower walls of which the inwardly struck flanges 19 of the plate 12 rest to support the plate. The upper leg section rests upon the upper end of the lower leg section and is held against movement by the engagement of the plates 12 and 14 therewith. The. flanges 15 of the plate 14 are provided at the upper and lower ends thereof with openings 23 for the reception of the ends of brace irons 24. lt will be noted that between the lower ends of the upper leg section and the bottoms of the notches the plates 12 and the inner walls of the notches 22 a recess R is formed. These recesses receive the ends of girts 25 shown in the present instance as comprising a pipe having its end flattened as at 25a to engage in the recess, the flattened end 25a being provided in the under surface thereof with notches 26 adapted to receive a bolt 18. lVhen these notches are seated upon the bolt the upper surfaces of the flattened portions of the girts which project into the recesses are abutted by the lower ends` of the upper leg sections and disengagement from the bolts is thus prevented. Since the notch and bolt engagement of the girts will prevent spreading of the leg sections a rigid structure is provided and at the same time the girts are readily removable when the leg sections thereabove are removed. The top irons 11 each have one arm of the outside plate l thereof provided with a flange, one arm having a short flange 2T, the other arm having al long :flange 28, the flange 28 being of a length equal to the length of the arm, bearing the short flange. The flange 28 is bent into the bight of the angle iron 12 so that it is horizontally disposed and forms a top plate. rlhe flange 27 is bent outwardly until it is horizontally disposed and in the same plane as the flange 2S. The flange 28 rests upon the upper surface of the uppermost leg section with which it is associated and being of greater size than the leg sections projec-ts beyond the inner edges thereof, these projecting portions of the flange 28 and the flange 27 having openings 29 formed therein for the reception of securing means for fastening the top irons and crown block. The flanges l5 of the plates lil of the top sections are provided with but a single brace iron receiving` hole 23 which is preferably arranged at the lower end of the flanges.

1t will be seen that by the use of derrick irons constructed in accordance with my invention a derrick may be readily erected and torn down, shipped or stored for future use. rlhe plates may be readily applied and since the upper sections may be lifted from the plates there is no necessity for completely removing the bolts from the plates for disassembling the sections of the derricl. 1t will furthermore be obvious that the construction of the plates is such that they may be formed entirely by dieing and punching and accordingly may be very cheaply produced. As the construction of the plates is capable of considerable change and modification without in any manner departing from the spirit of my invention 1 accordingly do not limit myself to such specific structure as hereinbefore set forth except as hereinafter claimed.

I cla-im l. A derrick iron for the legs of derriclrs comprising in combination an outer V-` shaped plate adapted to receive in the included angle thereof the leg of the derriclr, the arms of said plate being of greater length than the width of the leg of the derriclr, and an inner V-shaped plate adapted to receive in the included angle thereof the leg of the derrick at the opposite angle of the leg from the outer plate, the arms of said inner plate being of a length less than the width of the leg of the derrick and being provided at their ends with outwardly di-L other arm and being bent into the included angle of the arms, the flange of the other arm being bent outwardly and having its upper surface in approximately the same plane as the flange of the first named arm, said flanges combining to form a support for the top irons of the derriclr.

2. 1n a dei-rick and in combination, legs comprising sections arranged in end to end relation, the upper end of each section being provided in its two outer faces with a` notch, a V-shaped iron abutting said outer faces and provided adjacent its lower end upon its inner surface with inwardly directed flanges extending into the notches and resting upon the lower walls of the notches, a second V-shaped plate engaging the inner faces of the derriclr leg and clamped to the first named plate, the lower end of the leg section next above resting upon the upper end of the first named leg section and being disposed between and clamped by the upper ends of said plates.

ln a derrick and in combination, legs comprising sections arranged in end to end relation, the upper end of each section being provided in its two outer faces with ay notch, a V-shaped iron abutting said outer faces and provided adjacent its lower end upon its inner surface with inwardly directed flanges extending into the notches and resting upon the lower walls of the notches, a second V-shaped plate engaging the inner faces of the derrick leg and clamped to the first named plate, the lower end of the leg section next above resting upon the upper end of the first named leg section and being disposed between and clamped by the upper ends of said plates, and horizontal braces having their ends extended intol the notches of the rst named leg sections and having notches formed therein through which one of the securing elements of the plates extend.

a. In a derrick and in combination, legs comprising sections arranged in end to end relation, the upper end of eac-h section being provided in its two outer faces with a notch, a V-shaped iron abutting said outer faces and provided adjacent its lower end upon its inner surface with inwardly directed flanges extending into the notches and resting upon the lower walls of the notches, a second V-shaped plate engaging the inner faces of the derrick leg and clamped to the first named plate, the lower end of the leg section next above resting upon the upper end of the first named leg section and being disposed between and clamped by the upper ends of said plates, disengagement of said braces from said securing elements being prevented by the engagement of the upper leg section therewith.

ln testimony whereof I hereunto affix my signature.

DONALD D. BAXTER.

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