US1300988A

US1300988A - Drilling-gear.

Info

Publication number: US1300988A
Application number: US19573717A
Authority: US
Inventors: Samuel J Mathews
Original assignee: B & B Manufacturing And Drilling Co
Current assignee: B & B Manufacturing And Drilling Co
Priority date: 1917-10-10
Filing date: 1917-10-10
Publication date: 1919-04-15
Anticipated expiration: 1936-04-15

Description

S. l. MATHEWS.

DRILLING GEAR.

APPLICATION FILED ocT.1o.1911.

Patented Apr. 15, 1919.

A TTORNE Y.

SAMUEL J'. MATHEWS, 0F KANSAS CITY, MISSOURI, ASSIGNOR T0 B & B MANUFAC- TURING- AND DRILLING COMPANY, A CORPORATION 0F DELAWARE.

DRILLIN G- GEAR.

Specification of Letters Patent.

Patented Apr. 15, A1919.

To all whom t may concern.' l

Be it known that I, SAMUEL J Mn'rrrnws, a citizen of the United States, resldlng at Kansas City` in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Drilling- Gears, of which the following is a specification.

My invention relates to improvements in well drilling gear, and my object is to provide simple but eicient means to retain a iuid in the gear housing and prevent the entrance of water to the motors arranged within said housing for the purpose of driving the drilling tool and its shaft.

Inorder that the invention may be fully understood, reference will now be made to the accompanying drawing, in which:

Figure 1 is a vertical section of a well with my gear in position therein.

Fig. 2 is an enlarged, broken section on line II-II of Fig. 1.

Fig. 3 is an enlarged, broken section on line III-III of Fig. 1.

Fig. 4 is an enlarged, broken section on line IV-IV of Fig. 1.

In carrying out the invention, I provide a suitable housing consisting, preferably, of a plurality of

sections

1, 2. 3. 4, 5, 6, 7 and 8 connected by nipples 10, so that access may be had to any of the bearings 12. in which the tool drive shaft 14 is journaled. Said shaft 14 is driven by electric motors 16, any number of which may be employed.

The lower portion of the section 3, has a transverse partition 17` provided with an Y opening 18.through which lubricating oil,

insulating oil, or a combination of both may be introduced. Normally the opening 18 is closed by an air-tight plug 20, to relieve the top of the column of oil of atmospheric pressure.

In order that all of the sections from the partition 17 to the section 8, inclusive, may be filled with oil, ports 22 are formed in the bearings 12, so that as the oil is introduced through the opening 18, it will flow through the ports 22 until all of said sections are lled to the partition 17. I

The oil is prevented from escaping through the lowermost bearing 12 by packing 25 and a gland 26.

Traps

27 and 28 are applied to that portion of the shaft 14 extending through the

sections

7 and 8. Each trap comprises a container 30, fixed to the shaft, and a baie or sleeve 31 depending from the adjacent bearing 12, as disclosed by Fig. 4.

When introducing the oil into the sections through the opening 18, the air in the latter is displaced by said oil. Hence there will be atmospheric pressure exerted on the oil to retain it in the sections when the plug 20 is closed. However, the packing 25 in the lowermost bearing 12 soon becomes worn sufficiently to admit air into the section 8, but since this air is at atmospheric pressure it tends to prevent the oil from leaving the lowermost container 30.

Should water enter the section 8 through the worn packing, it will flow into the lowermost container 30 until it reaches the lower end of the batlie 31, where it remains, owing to its specific gravity being greater than that of the oil. Sealing of the oil within the sections insures lubrication for all of the bearings 12 and the shaft 14, and obviates all danger of damage to the motors from water, as the latter is effectually excluded from the sections or chambers containing said motors.

In practice, the trap 27 is found eiiicient in retaining the oil and excluding water, but as a precautionary measure I also employ .the second trap 28.

The uppermost section 1 is supported by a swivel member 35, which is connected to a cable (not shown), employed in raising and lowering the housing, and in order that said swivel 35 may be constantly lubricated where it extends through the upper portion of the section 1, and water excluded from the section, I provide said section with a trap 36 embodying a container 37 fixed to the swivel 35, and a baffie 38, threaded into the section 1. Should water in the well reach a level with the top of the trap 36, it will pass upwardly therein to the top of the bailie 38 and thus seal the oil, which is lighter than -the water, between the top of said baffle and the adjacent wall of the container 37.

From the foregoing description, it is apparent that I have produced eiicient means for lubricating the tool shaft 14 and its bearings, and also for excluding water from the motors 16, and while I have shown and described the preferred form of my invention, I do not exclude such changes in the construction, proportion, and arrangement of parts as p operly fall within the spirit and scope ofthe claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is: w 4

1. In a drilling gear 'of the character described, a housing containing a lubricant, and means Vsecured to the drilling gear to retain said lubricant in said houslng.

' 2. In a drilling gear of the character described, a housing containing a lubricant,

and a container 'secured to theldrilling gear` to retain the lubricant in said housing.

3. vIn a drillin gear of the character described, the com ination of a sui-table cutting means, a motor for driving said cutting means, a housing in which said motor is mounted, 'a column of lubricant in said housing,- and means coactin With atmospheric pressure to retain the co umn of lubricant in the housing. e'

4:. In 'a drilling gear of the character described, the combination `of a suitable cutting tool, a motor for driving said cutting tool, a housing in whichn said motor is mounted, a column of lubricant in said housing, and a container at the lower portion of the houslng to retain said lubricant in said housing.

5. In a drilling 'gear' of the character described, a housing containing a fluid, and a container secured to the dril ing gear to retain the fluid in said housing.

6. In a-drilling gear of the character described, the combination of a cutting tool, al

suitablydriven shaft for actuating said tool,

a housing in :which said shaft is journaled, a

column of liquid in said housing, and a trap surrounding the shaft and arranged n the `housing to retain the liquid therein.

ing a fluid, a vertical 7. In a drilling gear of the character described, the combination of a cuttingtool, a suitably driven shaft for actuating said tool, a housing in which said shaft is journaled, a column of liquid in said housing, a-tubular member Within the housing and surrounding va portion of the A.ing a Huid, a vertical shaft, extending through a 'wall of said chamber, a sleeve attached to the chamber and surroundin the shaft, andpmeans for 'retaining the ilu-1di in the chamber, said means comprising a cupshaped member outside the chamber and embracing the shaft and the end of the sleeve.

10. n apparatus ofthe class described, the combination of an air tight chamber containing a fifuid, a vertical shaft extendin through a wall of said chamber, asleeve attac ed to the chamber and surroundin the shaft, and

'means for retaining the Huid in the chamber,

said means comprising -a cup-shaped member outside the chamber and embracing the shaft and the end of the sleeve.

In testimony whereof I aix my signature, in the presence of twoo Witnesses.

AMUEL J. MATHEWS.

pparatus of the class described, the combmation ofan inclosed chamber contain-