US1392945A - Well-bcming- machine - Google Patents

Description

' OFFICE.

JAMES E. KELLAR, OF SISTERSVILLE, WEST VIRGINIA.

WELL-BORING MAeHINE.

Application filed January 25, 1921.

T 0 all whom it may concern:

Be it known that I, JAMES E. KELLAR, a citizen of the United States, residing at Sistersville, in the county of Tyler, State of West Virginia, have invented certain new and useful Improvements 'in Well-Boring Machines; and .I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it apper tains to make and use the same.

This invention relates to new and useful improvements in boring machine and particularly to machines for boring wells.

One object of the invention is to provide a boring machine in which the motor for driving the bit is mounted'within the machine.

Another object is to provide adevice of this character in which are provided novel and eiiicient, means for holding the barrel against rotation while the bit is in motion.

Another object is to provide such a barrel holding means which will automatically engage with the barrel and wall of the well upon being lowered and which will automatically release when the barrel is pulled upwardly from the well.

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawings.

In the drawings:

Figure 1 is an elevation of the invention within a well, the well being shown in section, as is also the well casing.

Fig. 2'is an enlarged vertical sectional view taken centrally through the boring device, and the casing in which it is positioned, with parts in elevation.

Fig. 3 is a horizontal sectional view on line 3-3 of Fig. 2, with the barrel omitted.

Fig. 4 is a horizontal sectional view through thegripping members, on the line 4+4 of Fig. 2.

Fig. 5 is a vertical transverse sectional View through one of the doors of the bottom disk on the line 55 of Fig. 3.

Referring particularly to the accompanying drawings, 10 represents the wall of the well, and 11 the casing in the well, through which the invention is lowered.

The invention includes a barrel 12, which has an upper chamber 13 and a lower chamber 14, separated by means of the horizontal Specification of Letters Patent.

Patented Oct. 11, 1921.

Serial No. 439,794.

disk wall 15, in the center of which is formed the opening 16, the purpose of which will presently appear. A disk '17 is dis posed at the upper end of the barrel, while a boring bit disk 18 is disposed in the lower end of the barrel. Disposed vertically through the barrel is a shaft 19, the upper end being journaled in the rollerbearing box 20, in the upper disk 17, and its lower portion being journaled in the roller bearing box 21, in the'central disk 15. Within the chamber 13, and operatively mounted on the shaft 19, is an electric motor 22 which is arranged to rotate the shaft and drive the bit 18. In the lower chamber 14, on the shaft 19, is a spiral web 23, which serves to convey upwardly the matter cut by the bit.

On the upper disk is secured a ring 24 to which is connected a wire lifting and lowering line 25. Mounted on the upper end of the barrel 12 is an upwardly tapering nipple 26. Disposed above the barrel, and movable toward and away therefrom, is a ring 27 carrying a plurality of depending spring fingers 28, each equipped with .a wedge 29 for wedging engagement between the outer face of the nipple 26, and the wall of the well,'to hold the barrel against rotation while the bit is in motion. The ring 27 is connected to the wire line by means of the ropes 25 said ropes being of such length that when the barrel is suspended by the wire line, the ropes will be taut and hold the ring in an elevated position with the wedges out of engagement with the nipple and well wall, but when the device has been lowered to a point below the lower end of the well casing 11, and the wire permitted to become slack, the ring will fall and force the wedges into engagement with the nipple and well wall. Thus the wedges will be automatically engaged and disengaged when the device is lowered and lifted.

At the bearings 20 and 21 are formed stuffing boxes 30 and 31, respectively, to prevent entrance of foreign matter to the chamber which contains the motor.

The lower end of the shaft, 19, below the spiral web'23, is a central threaded nipple 23 which is screwed into the central boss 18' on the upper face of the disk 18. In this disk are formed the transverse elongated openings 32 in which are arranged the upwardly opening hinged doors 33. The

free edge of each of the doors 33 is beveled from beneath as shown at 34-, to rest on the correspondingly beveled wall 35 of the opening 32.

. The barrel, with its contained motor-and bit, are lowered through the casing 11', until the bit is below the lower end of the casing, and the motor started to rotate the bit. The

material cut by the teeth 01 the disk '18.

will raise the doors 33 so that the said material may pass upwardly through the openings 32 in the disk 18, disposed above the bit, and into the bottom chamber 13, where it is moved upwardly by the spiralweb 23. When the lower chamber becomes choked, the device is pulled up and dumped, and again lowered into the well, the weight of the cuttings holding the doors 33 in closed position. The wires for supplying current to the motor are shown at 33 as extending upwardly through the disks of the barrel. I

What is claimed is:

1. A well boring machine including a barrel having an upper chamber and a lower chamber, a vertical shaft rotatable within the center of the barrel, a motor in the upper chamber for driving the shaft, a

bit on the lower end of the shaft below the lower end of the barrel, a cutting conveying spiral web on the shaft in the lower chamber, a lifting and lowering line for the barrel an upwardly tapering nipple on the upper end of the barrel, and means for wedging action between the said nipple and thewall of a well, rotation. i

2. A well boring machine including a barrel, a motor in the barrel and having a shaft extending through the lower end of the barrel and provided with a boring bit, a ring above the barrel and connected vwith to hold the barrel against the barrel by a lifting and lowering line, an

upwardly tapering nipple on the upper end or' the barrel, and downwardly extending resilient fingers on said ring carrying wedge members for engagement between the nipple and the wall of a wellto'holdthe barrel

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