US2122513A - Well rig elevator - Google Patents

Description

July 5, 1938. J. B. CONNER 2,122,513

WELL RIG ELEVATOR Filed Nov. 9, 1936 2 Sheets-Sheet l A itorneys July 5, 1938. 2,122,513

J. B. CONNER WELL RIG ELEVATOR Filed Nov. 9, 1956 2 Sheets-Sheet 2 l I I l l I I Inventor A iiorneys Patented July 5, 1938 UNITED STATES PATENT OFFICE 4 Claims.

The present invention relates to new and useful improvements in elevators for oil or gas well rigs or derricks and has for its primary object to provide, in a manner as hereinafter set forth, a

5 device of this character embodying novel means for automatically centering the pipe in the well casing while at the same time firmly securing said pipe.

Another very important object of the invention is to provide an elevator of the aforementioned character comprising a pair of hingedly connected complemental sections together with novel means for releasably securing said sections in closed position around the pipe.

Other objects of the invention are to provide an elevator of the character described which will be comparatively simple in construction, strong, durable, highly efficient and reliable in use, compact, light in weight and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:-

Figure 1 is a view in front elevation of an elevator constructed in accordance with the present invention.

Figure 2 is a view in side elevation thereof.

Figure 3 is a top plan view.

Figure 4 is a fragmentary View in vertical section, taken substantially on the line 44 of Figure 1.

Figure 5 is a fragmentary view in rear elevation of the device.

Referring now to the drawings in detail, it will be seen that the embodiment of the invention which has been illustrated comprises a metallic ring which is designated generally by the reference numeral I, said ring including a pair of complemental half sections 2 and 3 which are hingedly connected at one end, as at 4. Projecting from diametrically opposite sides of the ring I are tapered guides 5, A tapered guide 6 projects from the hingedend of the ring section 2 adjacent the hinge 4, while tapered guides 1 and 8 are provided on the free end portions of the ring sections 2 and 3. It will be observed that the guide 8 is spaced from the free end of the ring section 3, thus providing a chamber 9 for the reception of a latch which is designated generally by the reference numeral lll. It will also be observed that the side guides 5 are wider than the guides to 8, inclusive. Formed integrally with the upper end of the guide 6 is an apertured ear ll in which a lifting ring I2 is loosely mounted.

, Ears l3 project from the guides l and 8, as shown to advantage in Figure 1 of the drawings, said ears having openings therein for registry with each other when the ring sections 2 and 3 are closed. The latch I0 includes a vertical cylinder M in which a bolt I is slidably mounted. A collar IB is provided on the lower portion of the bolt [5 in the cylinder M for engagement by a coil spring I! for yieldingly urging said bolt downwardly. As best seen in Figure 4 of the drawings, the lower end portion of the bolt I5 is engageable in the registering openings of the ears l3 for releasably locking the ring sections 2 and 3 in closed position.

The latch I0 further includes a lifting plate l8 for the bolt 15 which is secured on the upper end portion of said bolt. The lifting plate l8 comprises an upstanding integral neck [9 in which the bolt I5 is secured by a pin 20.

It is thought that the manner of using the device will be readily apparent from a consideration of the foregoing, particularly to those skilled in the art to which said device pertains. A hoist line (not shown) is attached to the ring l2 and the ring sections 2 and 3 are closed around the section of the pipe to be raised or lowered in the well between the coupling or joint of the pipe. The device is, of course, secured in closed position by the latch I0. The tapered guides 5 to B, inclusive, engage the walls of the well casing in a manner to automatically center the pipe therein. When the bolt I5 is in lowered or locking position the lifting plate 18 is engaged between the guides 'l and 8 in a manner to be protected thereby, thus preventing said plate from being accidentally elevated and unlocking the device. In order to open the ring sections 2 and 3 for releasing the pipes the bolt I5 is raised and the bolt 15 may be held in raised position against the tension of the coil spring IT by swinging the lifting plate [8 over the upper end of the guide 8. The reference numeral 2| designates a suitable fitting for lubricating the latch l0. Hand holds in the form of open rims 22 connect the upper portions of the guides of the ring sections 2 and 3 in spaced relation from said ring sections to facilitate placing said ring sections around the pipe.

It is believed that the many advantages of an elevator constructed in accordance with the present invention will be readily understood, and although a preferred embodiment of the device is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

1. An elevator or" the class described comprising a ring including a pair of complemental half sections hingedly connected at one end, means for releasably securing the rings together in closed position around a pipe, tapered guides projecting from the ring for centering the pipe in the well casing of a well, and a rim connecting the upper portions of the guides in spaced relation to the ring sections, said rim constituting a hand grip.

2. An elevator of the class described comprising a ring including a pair of complemental half sections hingedly connectedlatonesend, tapered;

guides on the ring for centering the same in a well casing, a pair of the guides being on the free end portions of the ringsections. and beingspaced romieach r n a manner de e chamb therebetween, ears. on saidcertain guides having openings therein for registry with each other when the ring sections are in, closed position around a pipe section, an-d'a latch'mounted, on

one ot said certain guidesand engageable in the ears. for releasably locking ther ring sections in,

ciosed. position,

3 An elevator of, theclass described comprising a" ring including a pair. of complemental half sections hingedly connected at one end, tapered guides on the ring for centering the, same in a well casing, certain of the guides being onv the free end portions of the ring sections and being spaced from each other a manner to define a chamber therebetween, ears on said certain guides having openings therein for registry with each other when the ring sections are in closed position around a pipe section, and a latch mounted on one of said certain guides and engageable in the ears for releasably locking the ring sections in closed position, said latch including a cylinder, aspxgingactuated bolt mounted for vertical reciprocation in said cylinder, and a lifting plate mounted on the upper end portion of said bolt, said lifting plate being engaged in the chamber when the bolt is in operative position and being engageable on said one of said certain guides for holdingthe bolt in inoperative position.

4'. An elevator of the class described comprising aringincllldz w-n apair of complemental half sections hingedly connected at one end and engageable around a pipe, a plurality of spaced, tapered guides projectingfromthe ringsections, certain 01$ saidguidesbeing on the free endpprg tionsot the ring sections and spaced from; each; other fer providing-a chamber therebetween, and a latch mounted in said chamber for releasably:

. locking the ring sections in closed position, said;

latch including a spring actuated reciprocating bolt, and a lifting plate mounted on said bolt and, being. enga eable in. the chamber, between, said certain, guides. whenthev bolt is in operativeposi.-. tion, said plate further being engageable on oneg of. said, certain guides for securing the bolt in, inoperative position. a '7 JULIAN BUFORD CONNER.

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