US1738820A - Elevator - Google Patents

Description

Dec. 10, 1929. D. L. DRISCOLL ELEVATOR File d March 28, 1925 //7 raw/bf pew/J 1. 0 800 Patented Dec. 1%, 1929 mesa) DENNIS In DRISCULL, ALHAMBRA, CALIFORNIA ELEVATOR Application filed March 28, 1925. Eerial No. 19,026.

This invention has to do with an elevator suitable for use in a well drilling rig, or the like, for handling pipe, casing, tubing, rods and like objects.

It is a general object of this invention to provide a simple, effective, practical and improved elevator.

An object of this invention is to. provide an improved support or bail construction for an in elevator.

Another object of my invention is to provide an effective improved means for retaining the bails in engagement with the body of the elevator.

A further object of my invention is to provide an improved locking means for the closure of an elevator.

The objects and features of my present in vention will behest and more fully understood from consid ration of the following detailed description of a typical form and ap plication of the invention throughout which description reference is had to the accompanying drawings in which- Fig. 1 is a view showing my improved ele-- vator in operating position on a casing.

2 is an enlarged view of the main part of the elevator, certain parts being broken away to show in section.

Fig. 3 is a plan section taken substantially as indicated by line 3-3 on Fig. 2 showing the elevator locked closed.

Fig. 4 is a view similar to Fig. 3 showing the locking means released so that the elevator can be opened and indicating in dotted lines the open position of the elevator.

Fig. 5 is a sectional view taken as indicated by line 55 on Fig. 3 and Fig. 6 is a view taken as indicated by line 6-43 on Fig. 5.

My present invention is intended primarily to be used in a well drilling rig, or the like, to handle pipes, casings; tubings, rods and like objects. I will, throughout this disclosure set forth one typical form of my invention suitable for handling casing and will. refer to the invention as being employed on casing, it being understood that this specific disclosure and reference are for purpose of illustration and for facilitating a full and accurate understanding of the invention and are not to be construed as limiting the scope or range 0t application of invention. I may further state that T have chosen to set forth a form or type of elevator suitable for use in connection with other well drilling apparatus now in common use. It is to be understood that the principles of my invention as defined in the appended claims are applicable broadly to elevators and may be applied to various types of elevators such as may come in use.

The elevator illustrated in the drawings comprises, generally, two pivotally connected parts adapted to be closed together around a casing, to engage under a collar or other part or projection on the casing in a manner usual to devices of this character. One of these parts is in the form of a body 10 the other a closure 11. The body 10 is provided with a vertical. casing receiving opening 12 rounded at its inner end to conform to the curvature of the casing. The opening 12 extends into the body from the front thereof, so that the main or central portion of the body is more or less U shaped in plan configuration. The closure 11 is pivotally connected to one side of the body 10 by a suitable pivot pin 13 and is adapted to be swung between an open position where the opening into the body 10 unrestricted. which position is indicated in dotted lines in Fig. at and a closed position in which it operates to confine a casing in the opening of the body. The closure is shown in the closed position in Figs. 3 and a of the drawings. The inner side 15 of the closure is curved to conform to the casing and the closure and body are so connected and related that the inner side 15 of the closure fits the casing closely when the elevator is closed causing the body and closure to form an annular structure which fits the ca sing with only the necessary working clearance.

When the closure is in the closed position its outer end extends over and upwardly facing shoulder 95 on the body so that load is transmitted from the closure to the body at the outer end of the closure as well as at the inner end where it is permanently connected with the body.

Locking means 18 is provided for locking the closure in the closed position, such means beingarranged to lock the outer or free end of the closure to theside of the body opposite that to which the closure is pivotally connected. The locking means provided by this invention includes a locking member or dog which operates under compression to hold the closure in the closed position and an operating lever 21 ogcrable to release the dog when it is desired to open the closure. In the arrangement illustrated in the drawings the do'g'is pivotally mounted 111 the body 10 on a pivot .pin 22. ,The inner end of the dog 1s curvedconcentric with the pin 22 and fits a correspondingly curved socket 223 provided in the body so that the dog is supported directly by the body as well as thepivot pin. The pivotal'axis of the dog is located outward or forward of the'outer end of the'closure when the closure is in the closed position so that the dog 20 extends inwardly to engage a shoulder provided on the outer part of the closure and is in position to operate under compression. VVh'c'n the parts are in closed position the dog 20 is in the path of theolosure so that it is put under compression strain by a tendency of the closure to open. The" dog is supported by or-reacts against the Socket 23. Suitable means'is provided in connect-ion with the-dog 'to normally yieldingly hold it in position to engage the shoulder 25' as shown in of the drawings. his means mayinclude a spring urging the dogin one direction and stop means for stopp is: the dog in the proper position may be providecb-y suitably relating the dog and socket, for instance,ajlug 46 may beprovided on'the dog to engage a suitable shoulder 47 on the body.) This stop means operatesto stop the lo'g in position to be engaged and depressed by the outer partof the closure as theclosureis swung to'the closed position and to cooperatively engage the shoulder 25 when the closure is in the closed position.

The-operating lever 21 is pivotally mounted on the outer portion of theclo'sure by means of a pivot "21 4'0 and includes an arm 41 ad d t'o en age and operate the dog 20 and MI'RITH 12 adapted to carry a handle 43. The

handle -13 maybe formed directly on the arm 42 or'it be detachable as shown in the drawings. 'The operating lever is related to 'th'ed'og so that'the'dog is depressed Lor moved out of engagement with the shoulder 25upon the 'handle 43 being swung'in the direction indicated by the arrow in Fig. 3 to a position such as is shown in Fig. 1. Further operation of the handle tending to swing it in the same direction will cause opening of the closure. A spring such as a leaf spring 45 may be provided in connection with the operating lever to normally hold it in the unactuated position. The operating lever may be limited in its movement by engagement with the closure shown in Figs. 3 and at of the drawings.

The means provided by my present invention for supporting the construction thus far described includes supporting rods connected to the body 1.0 at diametrically opposite points. The supporting rods 50 may be connected together at their upper ends in the manner shown in Fig. 1 so that they form a bail, or the upper ends of the rods may be connected in other manners such for instance, as I have illustrated in my copending application entitled Universal hanger for well-drillin tools, filed March 30, 1925, Serial No. 19,229. now matured into Patent No. 1,725,902. The lower end of each supportin rod 50 is carried by a projection or wing 51 extending from the body 10. The lower end of the rod 50 is provided with an enlargement in the form of a cross-bar or head 52. The cross-bar 52 is preferably integralwith the rod and is carried in a socket provided in the wing 51. An opening 53 extends upwardly from the socket through the top of the wing to pass the rod 50 as shown throughout the drawings. The opening 53 extends to one side of the wing to permit of the rod being passed into and out of position while a passage 54 extends downwardly from the socket 55 and then outwardly to the same side of the wing to pass the head 52. Upon the head being arranged in the socket as shown in Fig. 5 a block may be arranged in the passage to close it so that the head can not become removed from the socket. The block may be carried on a pivot pin 61 so that it can be swung into and out of operating position and may be provided with a spring actuated locking bolt 62 to releasably hold it in operating position. This construction is not only particularly simple and eii'ective but is noteworthy in that it can be conveniently manufactured without requiring; welded connections in the supporting members and in that it permits of the supporting members being easily and quickly applied to or detached from the body of the elevator.

Having described only a typical preferred form of my invention I do not wish to limit myself to the specific details set forth, but wish to reserve to myself any changes or variations that may appear to those skilled in the art or fall within the scope of the following claims. i

Having described my invention, I claim:

1. A support for an elevator including, a vertical rod having a transverse T head formed on its lower end, a projection on the elevator having an opening to pass the rod, a socket to hold the head and a passage to admit the head into the socket, and means for closing the passage.

2. A support for an elevator including, a vertical rod having a transverse T head formed on its lower end, a projection on the elevator having an opening to pass the rod, a socket to hold the head and a passage to admit the head into the socket and means for closing the passage including a block to be arranged in the passage.

In Witness that I claim the foregoing I have hereunto subscribed my name this 24th day of February, 1925.

DENNIS L. DRISCOLL.

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