US1314996A

US1314996A - Well-elevator

Info

Publication number: US1314996A
Authority: US
Publication date: 1919-09-02
Anticipated expiration: 1936-09-02

Description

E. C. WILSON. I WELL ELEVATOR. MPLICATION FILED JAN.21 1909. RENEWED MAR. I. 1912.

;1L',T314,996.. Patented Sept. 2, 1919.

ELIHU G. WILSUN, OF BAKERSFIELD, CALIFORNIA.

WELL-ELEVATOR.

specification of Letters Patent.

Patented Sept. 2, ram.

Application filed January 2, 1909, Serial No. 470,536. Renewed March '7. 1912. Serial No. 682,084.

To all whom it may concern Be it known that l, Eninu C. l VILsoN, a citizen of the United States, residing at Bakersfield, in the county of Kern and State of California, have invented new and useful Improvements in Veil-Elevators, of which the following is a specification.

This invention relates to well elevators and more particularly to elevators for handling casings, tubings, sucker rods and other elements and apparatus involved in the drilling, operation and maintenance of oil and other wells; and it has for its object to provide 1 an improved elevator of the general characterization above designated, which will be superior in point of relative inexpensiveness and simplicity of construction. durability, positiveness and efficiency in operation, resistance to the stresses inci dent to use and operation, and general servicea-bility.

In elevators heretofore designed for service within the general field above defined,

numerous defects and weaknesses appear obviating the proper degree of serviceability and etliciency required of such a device or mechanism, and preventing a proper degree of ease and facilityof control and manipulation. A particular objection to such structures of prior production lies in the torsion to which the respective members are subjected by the load. resulting in wear and breaking down of the working parts as well as injurious impingement of the elevator members upon the load. Another objection resides in the difficulties incident to the attachment of the elevator to and detachment of the elevator from the load. Furthermore, in case of breakage .of or derangement of certain suspension members comprised within the elevator, ready and convenient repair is found impossible, and

consignment of the elevator to the workshop is necessitated to that end.

Certain features of this invention relate more particularly to hoists in general, and the same are disclosed and claimed in another application for United States patent divided out of the present case, such application having been executed April 1914.

\Vith the above initially stated objects in view, as well as the object of overcoming and obviating the objections. and weaknesses and inefficiencies last recited. the invention con sists in the novel provision. construction, combination. association. relative arrangement and formation of parts, members and features, all as hereinafter described, shown in the drawing and finally pointed out in claims.

In the drawing Figure l is a side elevation of a casing elevator embodying the invention, a portion of a casing being shown as connected therewith prior to its insertion to or removal from a well; and the elevator being shown in Working connection with hoisting means;

Fig. 2 is a perspective view of the essential features of the invention, being a reproduction of a portion of the showing of Fig. 1 upon an enlarged scale; and,

Fig. 3 is an isometric view of essential features of the same, the latter being shown in disassembled relations.

Corresponding parts in all the figures are denoted by the same reference characters.

Referring with particularity to the drawing, the improved elevator comprises broadly, clam-ping and holding means A and suspension means B therefor; the latter serving to support the former in connection with hoisting means C which latter are not' concerned in the issues of the invention and may be of any preferred and suitable type. The invention resides in the formation, arrangement and connection of the members and elements of the clamping and holding means and the suspension means, the former comprising two clamping and holding members a and b, respectively, and the latter comprising two suspension members c and (Z. respectively. The clamping and hold ing member a may be designated the working body of the means A, and the member 7) may be designated the confining body of the means A; the parts and features hereinafter described and shown in the drawing being auxiliary to the members a and b and the suspension members a and (Z, all of the same cooperating and being interrelated to the ends of stress-resistance, rigidity and working efiiciency. I

The bodies a and b are detachably united by connection means 6 which permit relative movement of the same; securing means f being provided for maintaining. the members a and b in predetermined relative positions with relation to the load 9; as. for engaging and sustaining the load. The suspension members 0 and l are connected directly with the member/o. the weight of the load being imposed upon said suspension means directly through the agency of said member a. h and 7c designate confining members positioned with respect to the suspension members 0 and d, and whereby the latter members are maintained in operative connection with the member a; said confining members it and k being preferably detached from the member a.

whereby a substantially circular passage 8 is formed vertically, transversely of the clamping and holding means A, and designed for the reception of the load 9. The matenial of which the portion 7 is composed may be thinner or of less mass than that of which the portion 4 is composed, the portion 4 supporting the major portion of the load. The connection means 6 are applied to one end of the bowed or curved portion 7, and the securing means f to the other end thereof. The suspension members 0 and (Z are applied to the end extensions 5 and 6, respectively, of the bowed or curved portion 4, which also respectively accommodate the confining members it and 7c. 7

In the preferred construction in which the curved portions 4 and 7 unite in the forma tion of a circular passage 8, the portion 4 includes the major portion of such circular formation being more than semi-circular, the portion 7 being consequently less than semi-circular; and of a semi-circular formation' so constituted, the common plane within which the extensions 5 and 6 lie co incides substantially with the plane of a diameter of the circular passage 8. The con nection means 6 and securing means f are arranged at one side of the plane last referred to and in a plane coincident with the chord of an are less than a semi-circle in extension.

The connection means 6 comprises two lugs 9 and 10, respectively, projecting from the body a substantially at the line of junction of the extension 6 and the central portion 4; combined with a lug 11 formed at one end of the curved portion 7 of the member I); and a headed pin or pintle 12 passing through holes or openings 13 and 14, respectively, in the lugs 9 and 10 and a registering hole or opening 15 in the lug 11. The securing means 7 comprises two lugs 16 and 17, respectively, projecting from the opposite end of the curved portion 7 in combination with an outwardly projecting hookshaped lug 18 formed upon or connected with the body a and projecting therefrom substantially at the line of junction between the central curved portion 4 and the extensiori 5, together with a key or wedge 19 adapted to be passed between the lugs 16 and 17 and the lug 18; said key or wedge preferably having an angular extension 20 between which and the outer surface of the curved portion 7 extends a chain 21 or other suitable attaching means. The lug 18 is so arranged with respect to the lugs 16 and 17 that the key or wedge 19 bears against the lug 16 above and against the lug 17 below said lug 18, firmly holding the members a and 6 against opening; and effectually opposing and neutralizing, substantially from top to bottom of the members a and b, stresses having the tendency to force the members open or torsionally affect them and the connection means 6 thereof. Zdesignates secondary holding means with which the members a and 7) are provided, being adapted and devisedfor the transmission to the member a of the weight of the load imposed upon the member I); acting to that end with the lugs 10 and 11, respectively, upon the member a and the member Z).

The holding means Z comprise abutments 22 and 23, respectively formed upon or connected with the member a inward of the )laue of the hi 18 and al'ra-n od substan- 9 tially in the line of junction of the portion 4 and extension 5 of the body a; in combination with the lugs 16 and 17 which are arranged for imposition respectively upon the lugs 22 and 23 when the members a and b are in relative positions permitting operation of the securing means f by the insertion of the key or wedge 19 between the lug l8 and the lugs 16 and 17; and said holding means Z further include a member 0 consisting of an. angular recess in the bowed or curved portion 7 of the member 7), adjacent to the lug 17, the upper portion of which recess is flush witlrthe lower portion of the lug 17 and is adapted to seat upon the abutment 23.

The suspension members 0 and (Z comprise each a closed link 24, preferably metallic, the lower. end portions 25 of which are designed for engagement with the extensions 5 and 6 of the body a, and the upper end portions 26 of which are designed and adapted for engagement by the hoisting means C ora book 27 included therein. The links 21 are preferably laterally bent so that their upper end portions 26 mutually approach or converge, arching in totality above the members a and 7). Each of the links 24 is engaged with one of the extensions 5 and 6 bypassing the same through a longitudinal slot 28 formed therein into a curved seat 29 constituting the inner termination of such slot, each of, the end extensions 5 and 6 being in this manner bifurcated as shown clearly in Fig. 3.

Latc es The confining members it and k respectively close the slots 28, when in operative positions, and complete substantially circular formations of the seats 29, each of said members it. and Z; comprisesa block 30 fitting between the two portions of the bifurcated structure of each of the respective extensions 5 and (5. The blocks 30 are held in operative positions by securing devices such as headed bolts 31. each of which passes through holes or openings 32 and 33, respectively, in the respective bifurcated extensions 5 and (3 and likewise through a registering hole or opening 34; in the respective block 30. Asuitable nut 35 is applied to each bolt 31.

The upper surfaces of the members a and I), or at least of the .curved or bowed portions 4: and '2' of the same, are preferably plain and smooth and adapted for the reception of the collar 36 of the casing 37 constituting the load g, or for the reception of any substituted part in adaptation of the elevator to other work than that specifically illustrated.

The operation, method of use and advantages of the improved well elevator constituting the invention, will be understood from the foregoing description, taken in connection with the accompanying drawings and the following statement:

With the parts in the relative positions shown in Figs. 1 and 2 of the drawing and ready for the reception of the load, such as the well casing 37 the members a and b are relatively moved upon the connection means 6, which act as a hinge,the securing means 7 being first manipulated to that end by the withdrawal of the key or Wedge 19 from its position among the lugs 16 and 17 and the abutment 22 and the lug .18. The curved portion 1 of the member a is then passed into engagement with the load and beneath the collar 36 of the casing 37, and the collar 36 is brought to bear firmly upon the upper surface of the curved portion 4. The memher I) is then swung against the member a, upon the connection means 0, the upper surface of the curved portion 7 passing under the collar 36;,and the key or wedge 19 is passed between the lugs 16 and 17 and the lug 18, firmly holding the members a and b in operative positions. The collar 36 is not firmly set upon the member a in practice.

- until the member 6 is manipulated as last described; and thereupon the collar 36 is imposed upon the members a and b at the upper surfaces of the portions 4 and 7 thereof.

All the weight of the load is transmitted j :to the suspension members 0 and (Z through co the extensions 5 and 6 of the member a; that portion of the weight of the load imposed upon the member 7) being transmitted first to the member a through the lugs 10 and 11 of the connection means 6 and the'lugs 16 and 17 and 22 and 23 and the wall of the recess means are in operative position.

constituting the holding means member 0 of the secondary holding means Z. A single rigid structure, namely the body a, thus transmits the weight of the load directly to the suspension means B, and the tendency of the two members of the clamping and hold ing means A to buckle under the weight of the load, as in other similar devices and mechanism, is obviated. Perfect alinement and working conditions respecting and affecting the two members a and Z) are maintained, due to rigidity of the member a and the transmission of all load weight imposed upon'the member '1) tothe. member a and thence to the suspension means B. It results, that the etliciency and operativeness of the connection means 6 and the securing means f are not diminished or destroyed by any relative movement between the members a and Z) due to the pressure upon said members of the weight of the load; and the ma nipulation of the member I) to swing the same upon the connection means 6 away from the member a for the release of the load, is not opposed by any distort-ion of or interference with the connection means 6 and the securing means f or their proper functions.

The obviation of any possibility of spring or play of the clamping and holding means A prevents the impingement of the clamping members a and 1), upon the casing with (3011' sequent injury to and weakening of the latter. Furthermore, the load can in no way foul the securing means f so as to cause the inadvertent manipulation of the same during operation.

The connectionof the suspension means B wvith but one of the clamping members,

namely, a, and independently of the connection means 6 and the securing means f, permits of connection of the load with, and dis connection of, the load from the clamping and holding means A while the suspension Furth ermore, due to the relative arrangement of parts described, the securing means 7' may be manipulated to free the member I), while the collar 36 of the casing is resting upon the uppersurface of the memberc, obviating the necessity of lowering the elevator so as to space the same from the collar of the casing before the securing means 7' can be inaniprr lated to permit the removal of the elevator from the load.

The detachable feature of the suspension members 0 and (l, by the accommodation to that end of the confining member h and in. enables repair and substitution of the links 2% with facility and without injury to any of the parts of the elevator.

I donot desire to be understood as limiting myself to the specific provision. construction, formation and association of parts. members and features shown and described;

but reservei the right to vary the same in adapting the improvements to varying conditions of use without departing from the spirit of the invention and the terms of the following claims.

Having thus described my invention I claim and desire to secure by Letters Patent 1. An improved well elevator, comprising two relatively movable clamping and holding members, connection means for said members, and securing means and secondary holding means for said members; said securing means and said secondary holding means comprising jointly two abutments and a hook-shaped lug upon one of said members, and two lugs upon the other of said members and arranged to be imposed respectively upon said abutments; said member having a recess which receives one of said abutments; and a. device adapted for insertion between said lugs and one of said abutments and said hook-shaped lug.

2. An improved well elevator, comprising two relatively movable clamping and holding members, connection means for said members, and securing means for said mem bers; said securing means comprising a lug upon one of said members and two lugs upon the other of said members respectively in planes above and below said first-named lug; and a device adapted for insertion between said two lugs and said other lug.

3. An improved well elevator, comprising two relatively movable clamping and holdlng members, connection means for said members, and securing means and secondary holding means for said members; said securing means and said secondary holding means comprising jointly two abutments and a hook-shaped lug upon one of said members, and two lugs upon the other of said members and arranged respectively in planes above and beneath said hook-shaped lug and arranged to be imposed respectively upon said abutments; said member having said lugs being provided with a recess which receives one of said abutments; and a device adapted for insertion between said lugs and one of said abutments and said hookshaped lu 4. Improvements of the character disclosed, comprising two relatively movable clamping and holding members having a hinge connection and capable of be ng opened or closed at such hinge connection when a pipe is between the same, suspension means connected with one only of the clamping members, and securing means whereby said members are held together In working said lugs being provided with relation; said member with which said suspension means are connected being provided with an abutment upon which is seated the swinging end of the other clamping member.

55. In improvements of the character disclosed, two relatively movable clamping and holding members, suspension means connected with only one of said members and at both ends thereof, connection means nected at one end and adapted to be swung apart sufiiciently to receive a well casing,

suspension means connected with only one of the clamping members and at two points of the same, an abutment upon the member with which the suspension means are connected and upon which is seated the swinging end of the other member, and a locking .device for securing said members in a closed position and applied to the same remote from the bore and independent of the upper surfaces of the clamping members whereby said locking device may be manipulated when a load is. imposed upon such upper surfaces.

7 A casing elevator 01'' the character disclosed, comprising two relatively movable clamping members which are hingedly connected at one end and capable of being opened with a well casing in position between the clamping members, suspension means connected with only one of said members and at diametrically opposite points thereof, an abutment upon the member with which the suspension means are connected and upon which is seated the swinging end of the other member, and a locking device applied slidably in a direction parallel with the axis of the bore between the clamp-ing members and at a point remote from the bore and independent of the upper surfaces of the clamping members whereby the locking device may be manipulated when a load is imposed upon such upper surfaces.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

ELIHU C. lVILSON.

l/Vitnesses H. I. TUPMAN, WV. W. VERNER.