US735205A - Pipe-driving head. - Google Patents

Description

PATENTED AUG. 4, 1903.

HEAD.

0. H. BUNG PIPE DRIVING APPLICATION FILED A N0 MODEL.

L L L L L L A lll 'tbll' u lgaegfor,

I III/fill!!! No. *rsaeoev UNITED STATES Patented August 4, 1903.

PATENT OFFICE.

ORA H. HUNGER, OF DAVIS, SOUTH DAKOTA.

PlPE-DRlVlNG HEAD.

SPECIFICATION forming part of Letters Patent No. 735,205, dated August 4, 1903.

Application filed April 18, 1908- Serial No. 153,290 No model.)

T0 to whom it may concern:

Be it known that I, ORA H. BUNGER, acitizen of the United States, residing at Davis, in the county of Turner and State of South Dakota, have invented a new and useful Pipe- Driving Head, of which the following is a specification.

This invention relates to a device adapted to be used in Artesian wells, where pipe is driven into the earth in sections.

The object-of my invention is to provide means for preventing the mutilation of threads on the ends of the pipe due to the contact with the drive-head or hammer used to force the pipe into the earth.

Another object is to provide a protector which is capable of being fitted over the threaded end of the pipe in such a manner as to be easily removable therefrom.

A further object is to provide means for protecting the end of the pipe against the blows of the driving medium.

Further objects and advantages of this invention will appear in the following description, and the novel features will be particularly pointed out in the appended claims, it being understood that various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

In the drawings, Figure 1 is a vertical longitudinal sectional view through the invention, the pipe being shown in elevation; and Fig. 2 is a sectional view on the line 2 2 of Fig. 1.

The reference-numeral 1 designates a section of piping or tubing such as is ordinarily used in connection with Artesian or oil wells. As is well known, the usual method employed in driving the pipe-sections into the earth results in a mutilation of the threads of the uppermost pipe-section or that one receiving the force of impact of the driving medium.

It is the purpose of my invention to overcome this objection; and to this end the invention consists of a cap 2, provided with a conical flange 3, fitted over the end of the tube and inclosing the free threaded end thereof. The flange is held upon the tube 1 in any adjusted position by means of yieldingly-supported engaging members 4:, carried within the flange and held in contact with the tube by the yielding connections 5. In actual practice the tubular flange 3 will be flared toward one end, within which the yieldingly-supported members 4 will be formed of approximately wedge-shaped concavo-convex instrumentalities, with a frictional engaging surface 6 on the concave portion of each member to firmly grasp the tube 1 when the wedges are drawn within the tube. These members 4, which constitute jaws, are disposed in concentric radial series around the tube, and the torsion of the springs 5 will have a tendency to retract them within the flange, so that any pressure upon the cap 2 will cause the members 4 to more tightly bind upon the tube 1. It will be observed that the cap is held out of contact with the end of the tube, and the force of impact of the blow upon said cap is transmitted to the tube 1, toward the lower end thereof. The advantage of this is that the pipe can be driven into the ground with more facility than would be possible if the blow were received at the free end thereof. When the pipe has been driven a sufficient distance into the ground and it is desirable to applya new section, an upward pull can be exerted upon the flange 3 and cap, which will permit the springs 5 to expand, thereby releasing the wedges, so that the entire device can be removed.

I claim- 1. A tube-shield comprising a cap and yieldingly-supported means carried by the cap for engagement with the tube.

2. A tubeshield comprising a cap and means ad justabl y carried by the cap for engagement with the tube.

3. A tube-shield comprising a cap and means for engagement with the tube to support the cap out of contact with the tube.

at. A device of the character described com prising a cap, and yieldingly supported wedges carried by the cap.

5. A shield comprising a cap, and frictionally-engaging adjustable supporting devices for contact with the tube and supported by In testimony that I claim the foregoing as the cap. my own I have hereto aflixed my signature in 6. The combination with a pipe-section, of the presence of two witnesses. a cap on one end thereof and inclosing the ORA H. BUNGER. 5 pipe end and means for engaging the pipe WVitnesses:

for supporting the cap out of contact with H. M. HESSENIUS,

the pipe end. J. E. WALKER.

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