US741925A

US741925A - Casing or drive-pipe screwer for well-rigs.

Info

Publication number: US741925A
Application number: US11882302A
Authority: US
Inventors: Robin S Oiler
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-08-07
Filing date: 1902-08-07
Publication date: 1903-10-20
Anticipated expiration: 1920-10-20

Description

N6. 741,925. PATENTED OCT. 20, 1903.

R. s. OILEB. GA'SING'OR DRIVE PIPE .SGREWERFOR WELL mes.

APPLICATION F ILED AUG. 7, 1902.

N0 MODEL.

witnesses l i l NTTED STATES Patented October 20, 1903.

PATENT 1. FFICE.

ROBIN S. OILER, OF LOS ANGELES, CALIFORNIA.

SPECIFICATION forming part of Letters Patent 110. 741,925, dated October 20, 1903.

Application filed August '7, 1902. Serial No. 118,823. (No model.)

To all whom it may concern Be it known that I, ROBIN S. OILER, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Casing or Drive-Pipe Screwer for Well- Rigs, of which the following is a specification;

An object of this invention is to provide simple and convenient means for screwing and unscrewing well-casing or drive-pipe by motive power. I accomplish this object by providing a wheel adapted to encircle the well-casing, a support for said wheel, means for connecting the wheel with the well-casing, and means for rotating the wheel. Said wheel is desirably an annular rim, and the same is supported and-held against lateral displacement by antifriction-rollers.

The accompanying drawings illustrate the invention.

Figure I is a plan of the invention applied in a standard well-rig, a portion of which is shown. Fig. II is a side elevation of the same. Fig. III is a fragmental detail plan of the wheel, its antifriction-support, and the devices by which it is connected with the well-casing for turning the same. Said wellcasing is also shown. Fig. IV is a vertical section on irregular line IV IV, Fig. III, a fragment of the casing being shown. Fig. V is a detail of the pulley for driving the bullrope. Fig. VI is a detail of a fragment of the wheel and the adjustable device for bold ing one end of the casing-pole.

1 designates a well-casing. 2 is a wheel mounted to turn coaxially of such casing. 3 is a bull-rope for driving the same.

4 is a driving-pulley of a standard well-rig, (indicated in a general manner by 5.)

Means are provided for detachably connecting the wheel 2 with the casing 1. Any suitable means may be employed for this purpose. Such means, as shown, comprise a casing-rope 6, a casing-pole 7, and

pins

8 and 9,.connected with the wheel 2 for engagement with the casing-pole 7to turn the'same around the axis of the casing when connected with the casing by the casing rope 6, as shown in Fig. 111.

10 is a frame mounted on any suitable support, as the derrick-floor 11, and provided with rollers 12, which support the wheel 2.

Said wheel is desirably formed in a grooved ,ring the inner face 13 of which is convex in cross sectiou, and the support is formed with grooved rollers 12, in which the convex face 13 runs, so that the wheel 2 is supported by the rollers 12 practically against both vertical and lateral movement.

14 designates brackets fastened to the frame 10 for supporting the grooved rollers 12, which are arranged in a circle coaxially with the well-casing 1.

15 is a slotted bracket fastened to the rim or wheel 2 in order to adj ustably mount the pin 8 on the same. Said pin is desirably passed through the slot 16 of the bracket and fastened by a nut 17. The purpose of this adjustment is to enable the workman to bring the casing-pole tight against casing of any of the sizes of well-casing inuse, thus enabling the device to be readily applied to screw or unscrew any-sized casing.

The frame 10 may be composed of an outerring a, cross-bars b a, forming supports for the frame, and stays d e, fastened to said ring Ct.

f and g designate two bars adj ustably con nected with the cross-bars b c andadapted to be brought into position to support the easing-elevator and to thereby cause the weight of the casing to hold the frame.

In practical use the frame 10 will be brought into appropriate position coaxial with the well, and when the casing is tobe screwed or unscrewed the usual elevator 18 will be applied to the casing in the usual manner and will be allowed to rest on the cross-bars or supports f, which are fastened to the crossbars b of the frame. When the weight of the casing and the elevator is allowed to come upon the supports f g, the cross-bars b and the frame 10 to which they are secured are firmly held against rotation. Thecollar it will be held by casing-tongs i in the usual way to prevent rotation, and the casing-joint j, which is to be screwed or unscrewed, will be connected with the wheel or rim 2 by some suitable means. For instance, the rope 6 will be hitched to the casing-joint j in the usual way and the pole 7 will be passed through the loop of said rope 6 and brought against the casingj and into engagement with the

pins

8 and 9. The bull-rope 3 being in place, the

engine (not shown) may be started and the bull-rope 3 driven to rotate the wheel or rim 2 in the desired direction.

In Fig. III the pole is shown adjusted for screwing the casing,as indicated by the arrow on the rim.

By applying the rollers inside the rim 2 I have made it possible to drive the rim by a bull-rope, thus affordinggreat simplicity of construction and operation.

Having described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. An annular rim adapted to encircle a well-casing, upright rollers inside said rim and forming a support therefor to prevent lateral displacement, means for detachably connecting said rim to a well-casing, and means encircling the rim for rotating the same.

2. In awell-rig, a wheel adapted to encircle a well-casing, a support therefor, means for detachably connecting the wheel to a wellcasing, a bull-rope for driving the wheel, and means for driving the bull-rope.

3. An annular rim adapted to encircle a well-casing, upright antifriction -rollers inside the rim, and forming a support therefor to hold it against lateral displacement, a pole spanning said rim, means for connecting the pole with the casing, means for connecting the pole with the wheel, and means for rotating the wheel.

4. An annular rim adapted to encircle a well-casing, antifriction-rollers inside the rim and forming a support therefor to hold it against lateral displacement, a pole spanning said rim, means for connecting the pole with the casing, pins for connecting the pole with the wheel, and means for rotating the wheel.

5. A frame, an annular rim, rollers connected with the frame and arranged in a circle, inside said rim to prevent lateral displacement, means encircling the rim for rotating the same, and means for detachably connecting the rim with a well-casing.

6. A frame, rollers connected with the frame and arranged in a circle, a circular rim surrounding said rollers and carried thereby, means for rotating the rim, means for detachably connecting the rim with the well-casing, and means connected with the frame for supporting the elevator which supports the casing, whereby the frame is held from turning.

7. In a device of the class described,in combination, an annular rim adapted to encircle a well-casing,a support therefor, a pole spanning said rim, means for connecting the ends of the pole to opposite sides of saidrim, a bull-rope for driving said rim and therewith said pole and operatively connecting said pole with said casing, and means for driving the bull-rope.

8. In a device of the class described, in combination, an annular rim adapted to encircle a well-casing, a support therefor, a pole spanning said rim, adjustable means connecting said pole to opposite sides of said rim, abullrope for driving said pole with said casing, and means for driving the bull-rope.

9. In an apparatus of the class described, in combination, an annular rim adapted to encircle a well-casing, a support therefor, a pole spanning said rim, hearings on said rim against which said pole bears during revolution, one of said bearings being adjustable, a casing-rope connecting said pole with said casing, and means for driving said casingrope.

10. In an apparatus of the class described, in combination,an annular rim adapted to encircle a well-casing, asupport therefor, a pole spanning said rim, a stationary pin on said rim, a second pin adjustably mounted in a slotted bearing on the opposite side of said rim, said pole adapted to bear against said pins during the revolution of said rim, a bullrope for driving said pole with said rim, and means for driving said bull-rope.

11. In adevice of the class described,in'combination, an annular rim adapted to encircle the well-casing, provided with a rope-engaging groove, and with hearings on opposite sides of its upper face, a pole spanning said rim and bearing against said bearings, a support for said rim, antifriction devices on said support engaging said rim, a bull-rope for driving said rim, means for driving said bullrope, and a casing-rope engaging said casing and pole.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses, at Los Angeles, in the county of Los Angeles and State of California, this 31st day of July, 1902.

R. S. OILER.

Witnesses:

.IAMEs R. TOWNSEND, JULIA TOWNSEND.