US1259026A - Well-boring apparatus. - Google Patents

Description

W. G. KNAPP.

WELL BORING APPARATUS.

APPLICATION FILED FEB. 24. 1914.

1 gamma. Patented Mar. 12, 1918.

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WILLIAM G. KNAPP, OF ALHAMBRA, CALIFORNIA.

WELL-BORING APPARATUS.

Specification of Letters Patent.

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Application filed February 24, 1914. Serial No. 820,745.

To all whom it'may concern:

Be it known that 1, WILLIAM G. Knarr, a citizen of the United States, residing at Alhambra, 'in the county of Los Angeles and State of California, have invented new and useful Improvements in Well-Boring Apparatus, of which the following is a specification. h

This invention relates to we-ll boring ap paratus, and more particularly to well boring apparatus for producing deep oil and other wells; and it has for its object to provide apparatus of the general character stated concerned in the handling and rotation of the boring or drilling string, in the making up and breaking up of the same.

The invention has for particular objects the provision of apparatus of the general nature stated which will be superior in point of relative simplicity and inexpensiveness of construction and organization combined with facility and convenience in application and use and handling, positiveness in operation, strength and durability, and which will be generally superior in'eiiiciency and serviceability.

With the above and other objects in View, the invention consists in the .novel and useful provision, formation, construction, combination,ass0ciation and relative arrangement and combination of parts, members and features, all as hereinafter described, shown in the drawings, and finally pointed out in the claim.

Certain features of construction and combination of parts and features herein disclosed are claimed in another application filed by me June 26, 1913, Serial Number for well boring apparatus, in which application the present invention is also disclosed.

In the drawings:

Figure 1 is a central vertical sectional view of-certain features of well boring or drilling apparatus, showing a portion of a drilling string as supported in an elevated position by means of a device embodying the invention.

Fig. 2 is a transverse sectional view taken upon the line ac -m of Fig. 1, looking in the direction of the arrows.

Fig. 3 is a detail sectional view through one of the sockets within which the outer ends of the inclined props are received.

Fig. 4 is a detail view of one of the jaws for supporting the string in a raised position.

Corresponding parts in all the figures are designated by the same reference characters.

Referring with particularity to the drawings, A designates the base frame of a rotary well drilling or boring apparatus, the same being in use installed at the orifice of the well hole, and supporting upon anti-friction devices 6 a rotary table or top B, the base frame and top having registering vertical central openings, 7 and 8, which are above and register with the orifice of the well, and through which the drillingor boring string, sections or joints C which are shown in the drawings, is raised and lowered in the operations of making up and breaking up and rotating the string with its boring or drilling tools at the lower end thereof. The rotary top is provided with an annular series of gear teeth 8 meshing with a gear '9 upon a drive shaft 10 included in operating means D for the rotary table or top, and the construction and organization of the base frame, rotary top, drilling or boring string and operating means may be varied in accordance with preference, and are not directly concerned in the issues 'of the invention.

F designates ameans of operative connection between the rotary top and the string, comprising specifically supporting means or members for suspendin the string or holding it in position of vertical adjustment, durlng the making up or breaking up of the string. This means F for supporting the drilling string while making up or breaking up the same is designed to be used interchangeably with, and in combination with a gripping and rotating means, such as that shown in my copending application Serial No. 775,873, filed June 26, 1913. The drilling string supporting means F is constructed to be associated in use with an annular support I) applied to and disposed upon the rotary ing of a broad and "strong metallic .ring resting at its lower surface upon the upper surface of the rotary top and detachably coupled therewith by removable pins 11, the ends of which ass vertically through suitable bores in the ring and are received in suitable holes in the table or top, the heads of such pins being counter-sunk beneath the top surface of the ring 5. is ring has table or top B, and consista continuous outer peripheral lip or ledge 12 resting upon the top B, its lower'surface being flush with the lower surface of the ring 5.

The means of operative connection F comprises a plurality of segmental vertically extended bodies 29 each of which is provided with an outwardly ranging pivoted leg or prop 30 having at its outer end short lateral projecting gudgeons 31, said outer ends being rounded so that they may be socketed into curved seats 32 formed in the base ring 5 and produced inwardly and downwardly from the inner periphery of such ring and equally spaced apart. Said curved seats 32 are provided with laterally extended openings 33 opening inwardly through contracted mouths 34 and which receive the gudgeons 31. The gudgeons 31 can be passed into the contracted mouths 34 of said openings 33 when turned to bring the flat sides thereof into alinement therewith, said gudgeons being of flattened formation; but when the respectlve leg or prop 30 is tilted to turn the gudgeons after their insertion within 'the extensions 33', they are held by the walls of such extensions from withdrawal. Each of the legs 30 is pivotally pinned to its respective body 29, as at 35, through an enlarged or elongated opening in the leg or prop, which permits the respective end of the latter to have unobstructed thrust action against the body. The inner or working face of each body is preferably transversely serrated or roughened as at 36 for gripping action upon the string, the serrations eing so formed as to permit upward but prevent downward movement of the string when the gripping bodies are in operative engagement therewith.

The bodies overlap each other in a series surrounding the string, as at 37, so that the bodies are held to the string in unison, and the downward vertical separation or relative play of the same is prevented. This keeps .the bodies all in a properly assembled group in engagement with the string. Each of said bodies may be provided with a hand hold or grip 38, and each of the legs or props is preferably shaped to afford a convenient and effective grip or hold, and the bodies with their props or legs 30 are thus conveniently manipulated in putting them into place or removing them.

The operation, method of use and advantages of the improved well boring apparatus constituting the invention will be readily understood from the foregoing description taken in connection with the accompanying drawings and the following statement: 1

The bodies 29, when assembled in a series around the string and held thereto by the props or legs 30 extending from the bodies to the base ring, serve effectively to sustain the weight of the string during its making up or breaking up or whenever it may be desired to support the string at the orifice of the hole. Such bodies and their props are conveniently installed or removed, and safely and positively impart the weight of the string to the base ring and through that to the table or top. The bodies may rise and fall with the string, being confined to place by the props 30 which serve as working link connections between the bodies and the table.

It is manifest that I may make many and varied changes and variations in the construction, assemblage, application and combination of parts and features, at'variance with the organization herein specifically described and illustrated in the drawing, all within a fair and reasonable interpretation of the invention; andI therefore desire that my invention be not construed specifically to conform with the embodiment thereof herein disclosed.

Having thus described my invention, I claim and desire to secure by Letters Patent:

In apparatus of the character disclosed, the combination with a table or the like; of a plurality of bodies adapted to be applied to and to surround a string in unison to sus- WILLIAM G. KNA Pr.

Witnesses:

ALFRED H. DAEHLER, W. F. COOK.

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