US2023027A

US2023027A - mitchell

Info

Publication number: US2023027A
Authority: US
Publication date: 1935-12-03
Anticipated expiration: 1952-12-03

Description

D 3, 1935- w. J. MITCHELL 2,023,027

DRILL RIG Filed May 29; 1954 Patented Dec. 3, 1935 UNITED STATES FATENT @E'FIQE DRILL RIG Application May 29', 1934, Serial No. 728,113

7 Claims.

My present invention relates to an improved drill rig or equipment designed for use with rotary drilling machines. In the usual underground operations of these machines, means are readily accessible in connection with the surrounding walls of a tunnel or mine passage, for rigidly supporting the machine, and guiding the drill rod in its true course; but when the machines are employed in the open and above ground 10 to drill into the earth from its surface, a difficult problem is presented in holding the ma chine against vibrations and in maintaining the advancing drill rod in its true course.

By the utilization of my invention, I provide equipment or rigging for the drilling machine when the latter is employed above ground, as in drilling into the vertical face of a wall of earth, or into a hillside or other acute angle of the ground, and the rigging or equipment provides a rigid supporting structure for the machine and a guide and support for the drill rod. In actual practice my equipment has been employed in drilling holes from 50 to 70 feet into the granite face of a sheer wall of earth at an altitude sometimes as high as 1006 feet. Due to the simplicity in construction, ready adjustment of parts, and the use of -a minimum number of parts, the rig may with facility be assembled and erected for use, and the machine may with equal facility be set up, in places and under adverse conditions otherwise considered impracticable. Thus in excavation Work and other similar operations the progress of the work is facilitated, the cost of operations is lowered, and accuracy in drilling the holes is assured.

The invention consists in certain novel combinations and arrangements of parts as will hereinafter be more fully set forth and claimed. In the accompanying drawing I have illustrated one complete example of the physical embodiment of my invention wherein the parts are combined and arranged according to one mode I have thus far devised for the practical application of the principles of my invention. It will be understood that changes and alterations are contemplated and may be made, within the scope of my claims, without departing from the principles of my invention.

Figure 1 is a view in elevation showing a portion of the rig; and Figure 2 is an assembly view showing the set-up, with the drill rod working substantially perpendicular to the sloping face of the ground.

In carrying out my invention, when drilling from the surface into the earth on a line at an angle to the surface of the earth, as indicated in Figure 2, a construction hole is first bored to the desired depth into the face of the wall W, by use of a suitable tool, as a jack hammer drill, and a pipe or sleeve i is then inserted into the 5 hole, and fixed therein by a cement deposit which forms a jacket C for the guide sleeve i. This sleeve, which may be 2" in diameter and 2 long, more or less, is alined in the direction in which the hole is to be drilled by the rotary drill rod 10 R and the bit B at the forward end of the rod.

The guide sleeve is rigidly embedded in the earth to ample depth to guide the drill rod, and the outer end of the sleeve projects from the wall W for use in supporting the rig or equipment for the drilling machinery.

In order that the general arrangement and utility of parts may readily be understood I have shown a swiveled type of drilling machine operated by the engine or motor M, which is supported from the swivel head S and drill head I). The drill rod, as it revolves, is advanced by the feed screw F, a control lever is indicated at L, and a platform 3? is built on the wall W, for convenience of the operator, and for use as a 25 supporting element for the rig or equipment.

The bit B and the rod B have been entered through the guide sleeve 9 in Figure 2, and the machine is shown in position for actual use.

The portable rig or equipment includes a main 30 post 2 which is preferably hollow, and is disposed in parallelism with the the drill rod R and its guide sleeve 5, and the post unites the drill head or frame of the machine, rigidly, with the ground-sleeve I. For this purpose I employ an 35 adjustable clamp device between one end of the post and the guide sleeve, and another adjustable clamp between the other end of the post and the machine or its frame, and the parts of these clamp devices are readily assembled and 0 adjusted by the use of suitable tools.

The clamp for the ground-sleeve i includes a main block 3 with its cap 3 and the clamp bolts 5 by means of which the device is rigidly bolted in adjusted position on the projecting end of 45 the sleeve. A clamp saddle 6 mounted on the post is bolted at 6' to the block, and the outer cap plate l mounted on the post is bolted to the saddle at 8. In this manner a quick-detachable, but rigid connection is made between 50 the rigid sleeve 5 and the post 2.

At the upper or machine-end of the post, the clamp device includes a saddle 9 mounted on the post and bolted at iii to a part II of the drill head or machine frame, and the comple- 55 mentary cap-plate [2 which is mounted on the post is bolted at l3 to the saddle 9. In this manner the post is united to the sleeve l and the machine frame to form a rigid supporting structure for the drilling machine, and which is capable of withstanding the vibrations due to the operation of the engine or motor, and of course the post takes the strains or stresses from the drill rod and permits the latter to operate freely and be guided by the enclosing sleeve i.

For reinforcing the post structure I provide the post with a lateral arm [4, that is adjustably secured at its upper end, and. this arm is equipped with a clamp head l5 fitted against the post, and a complementary cap plate It is mounted on the post diametrically opposite the clamp head, and bolted to the head by a pair of bolts l1. Beneath the lateral arm M, an upright brace, or jack-bar I8 is located, with its bottom or lower end resting upon the platform P, and the upper end of the bar is provided with an adjusting screw l9 and lock nut 25 for extending or shortening the brace. The free end of the adjusting screw, as indicated in Figure 1, is forked or bifurcated at 2| to fit snugly up against the rounded face of the lateral arm l4, and as shown in Figure 2 this upright brace relieves the post 2 of excessive weight of the drilling machine.

An additional brace for the engine or motor M is shown in Figure 1, where the brace bar 22 is provided with an angular yoke 23 which may be bolted to the motor or to a rigid portion of the frame of the machine, and this brace is clamped in adjusted position by clamp device 24 on the lateral arm I4.

As thus described it will be apparent that the parts of the rig or equipment may readily be handled, in setting up the machine for operations, in adjusting the various parts of the rig with relation one to another, and these parts may quickly be associated with the machine frame and the supporting sleeve to provide the rigid support for the drilling machine. After the hole has been bored or drilled, the set-up may with facility be dismantled and the parts removed to another point for drilling.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:-

1. In a rig for a portable drilling machine, the combination with a post arranged in parallelism with a drill rod, a tubular ground support, quick detachable means comprising a pair of clamps at one end of the post for rigidly attaching the post the latter is supported on the post and the drill rod is operated through the tubular groundsleeve.

3. In a rig for drilling machines, the combination with a fixed ground-sleeve, of a post disposed in a plane parallel with the ground-sleeve, l5

quick detachable means comprising a pair of clamps for uniting the sleeve and post, and quick detachable means on the post for uniting the latter with a drilling machine.

4. In a rig for drilling machines, the combination with a fixed ground-sleeve, of a post disposed in a plane parallel with the ground sleeve, means for rigidly uniting said sleeve and post, means on the post for rigidly uniting the latter with a drilling machine, a brace for the post dis- 25 posed at an angle to said post, and a support for the brace.

5. In a rig for a drilling machine, the combination with a fixed ground-sleeve, of a post disposed in a plane parallel with the sleeve and means for rigidly uniting the post with said sleeve, a lateral arm on the post, a brace for said arm and a support for the brace, and means on the post for rigidly uniting the drilling machine and post.

6. In a rig for a drilling machine, the combination with a ground support, of a post, means for attaching said post to the ground support and means for attaching the post to a. drilling machine, a lateral arm on the post, a brace for said arm and a support for the brace and means on the lateral arm for bracing the engine of the drilling machine.

'7. In a rig for a drilling machine, the combination with a ground support, of a post, means for attaching said post to the ground support and means for attaching the post to a drilling machine, a lateral arm on the post, a brace for said arm and a support for the brace and an angular yoke on the lateral arm for attachment to the motor of the drilling machine to rigidly secure it in position.

WILLIAM J. MITCHELL.