US1788363A - Sucker-rod section - Google Patents

Description

Jan. 6, 1931. H. H. BRooKs E'rAL 5 sucKER ROD SECTION Fild Jan. 14, 1928 Patented Jan. 6, 1931 UNITED STATES HARRY H. BROOKS AND JAMES N. BISH, OF HAYNESVILLE, LOUISIANA SUCKER-ROD SECTION Application filed January 14, 1928. Serial 10.246300.

The present invention relates to sucker rods for oil wells or the like, and aims to provide a novel and improved rod sect1on constructed for relieving the rod of undue vlbra- 5 tion, friction between the rod and casmg, and

torsional strain or twisting that causes unthreading of rod sections, all of which are very detrimental to rods, casings, and cups during the reciprocating of a rod 1n a caslIl inother obj ectof the invention is the provision of a sucker rod section having the opposite ends thereof screwthreaded, said rod section is constructed of members or sections slidably connected together longitudinally and having a torsion spring therebetweenfor taking up sudden shocks, one section having a squared lug for engaging into a socket of the other section when said sections are forced together against the spring tension in order to lock said sections against turning movement with relation to each other in order that other rod sections may be screwed together or apart without removing our improved rod section.

It is also an object of the inventlon to provide a device of the above indicated 0 aracter, which is simple and substantial in construction, which can be manufactured economically, and which will be thoroughly efficient and practical in use.

With the foregoing and other objects in View, which will be apparent as the description proceeds, the invention resides in the construction and arrangement of parts, as hereinafter described and claimed, it being understood that changes can be made within the scope of what is. claimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a side elevation of our improved sucker rod section,

Figure 2 is a longitudinal vertical section taken on line 2-2 of Figure 1,

Figure 3 is a cross section taken on line 3-3 of Figure 1,

Figure 4 is a cross section taken on line 4-4 of Figure 2, and

Figure 5 is a cross section taken on line 5-5 of Figure 1.

Referring to the drawin s, the numeral 10 designates the upper mem er or section of our improved sucker rod section, while the numeral 11 designates the lower section thereof, the end of the upper section 10 being threaded, as at 12, for convenience in connecting other rod sections of the sucker rod thereto, while the lower end of the section 11- is provided with a threaded socket 13 for a similar purpose. Spaced below the reduced threaded end portion 12 of the upper section 10 is a reduced squared portion 14 for providing wrench engaging surfaces, while spaced from the lower end of the lower section is a similar reduced portion 15 for the same purpose. Thus it can be seen that either one of the sections 10 or- 11 may be engaged at the reduced squared portions thereon in order to hold the same against turning movement. In each of the sections '10 and 11 is provided a slot 16 into which is mounted a roller 17 by means of a pin 18 extending through each section and having the ends thereof riveted so as to rotatably support the roller, the said rollers being of greater diameter than the diameter of the sections 10 and 11 so that they will protrude slightly beyond the same at opposite sides.

The lower section 11 has at its upper end a reduced screw threaded portion 19 with a square socket 20, the purpose of which will be set forth as the description proceeds. Threaded upon the reduced portion 19 is the lower end of a sleeve 21 provided with a reduced cylindrical opening 22 in its upper end, which slidably receives a reduced lower portion or cylindrical rod 23 formed intergrally with the upper section 10, and on the lower end of this red is a collar 24, secured thereto by means of a pin 25 extending through said rod and collar. The lower end of the collar 24 is closed, as at 26, and on its lower end is formed a depending square lug 26"to fit into the square socket 20 in the upper end of the lower section 11 when the upper member of the sucker-rod section is slid downward in the sleeve 21 to engage therewith.

Mounted upon the rod 23 of the upper memher or section is a coil sprin 27 one end of which is in engagement with t e upper end of the sleeve 21 while the opposite end engages a shoulder 28 formed by reducing the diameter of the section 10 in forming the rod 23. By referring to Figure 2 of the drawings, it can be seen that the coil spring 27 will yieldably hold the two sections 10 and 11 in their furthermost positions with relation to each other with the collar 24 in engagement with the upper end of the sleeve 21. As the collar 24 and the interior of the sleeve 21 are circular in cross section, it can be seen that the sections 10 and 11 are permitted to turn with relation to each other, as the purpose of the coil spring is to normally hold the lug 26 out of engagement with the socket 20. In the cylindrical wall of the sleeve 21 is provided a plurality of vertical slots 29 which Wlll permit access to the interior of the sleeve such as when placing the pin 25 in position for retaining the collar 24 on the end of the rod 23 and for eliminating the compressing of air in 0pposite ends of the sleeve, which would interfere with the sliding movement of the sections with relation to each other.

. In operation, the improved rod section is used in connection with a sucker rod within a well casing. The anti-friction rollers 17 on the upper and lower sections of our improved device will eliminate friction between said device and the interior of the casing thus eliminating wear which eventually causes breakage. By providing a circular collar on the lower end of the rod 23 working in a sleeve of cylindrical formation, it can be seen that the two sections of the device are permitted to freely turn with relation to each other, so as to eliminate twisting of the sucker rod which often results in unscrewing of the sections thereof. By having the 'coil spring 27 positioned about the rod 23 in engagement with the section 10 and the upper end of the sleeve 21, it will be noted that all shocks and jars are eliminated, which cause undue vibration of the sucker rod and often result in the.

breaking of sections thereof. Thus it can be seen that a sucker rod section is provided which has a swivel connection therein to prevent the sections of the sucker rod from becoming unscrewed, a yieldable shock absorbing means, and anti-friction rollers for eliminating wear between said section and the casing.

By having the depending lug 26' on the upper section 10 and the socket 20 in the lower section 11, it is possible to screw or unscrew the rod without removing our improved rod section, as the two sections 10 and 11 may be locked against turning movement with relation to each other by forcing the two sections together against tension of the coil spring 27.

Having thus described our invention, what we claim as new is:

1. A sucker rod section comprising a pair of sections a rod carried by one of said sections, a collar attached to the end of said rod a sleeve slidably mounted on said rod and held thereon by said collar, means for connecting said sleeve to the other section, spring means engaging said sleeve and the section carrying said rod for holding said sleeve in its furthermost slidable position on said rod, and means on said collar and the other section for engagement in order to lock the sections against turning movement with relation to each other.

2. A sucker rod section comprising a pair of sections, a rod carried by one of said sections, a sleeve slidably mounted upon said rod, a collar attached to said rod for holding said sleeve on said rod, a spring arranged about said rod and engaging said sleeve and the section carrying said rod for yieldably holding said sleeve in its furthermost slidable position on the rod, means for attaching said sleeve to the other section, said other section having a socket therein of irregular formation, a lug carried by the collar also of irregular formation for engaging into the socket when the sections are slid together against compression of the spring, and means for locking the sections against turning movement with relation to each other.

3. A sucker rod section comprising a pair of sections, a rod carried by one ofsaid sections, a sleeve slidably mounted upon said rod, a collar attached to said rod for holding said sleeve on said rod, a spring arranged about said rod and engaging said sleeve and the section carrying said rod for yieldably holding said sleeve in its furthermost slidable position on the rod, means for attaching said sleeve to the other section, said other section having a socket therein of-irregular formation, a lug of irregular formation carried by the collar for engaging the socket when the sections are slid together against compression of the spring, means for lockin the sections against turning movement wit relation to each other, and a plurality of vertical slots in the wall of said sleeve. 1

HARRY H. BROOKS. JAMES N. BISH.

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