US889078A - Pipe and rod lifting tongs. - Google Patents

Description

NQ. 889,078. PATENTED MAY 26', 1908.

' o. WILsoN.

lPIPHAND ROD LIFTING ToNGs. APPLIOA'TION IAILED JAN. 31. 1908.

NVENTO? @limer 'lfrarzf v ATTORNEYS' Bri n oLiviiawItsoN, or sr. EDWARD, ivnisrnisiciqV i rire-.Ania `non LIFTING Tones'.

Toalll'wliom itv Iina/y concern: i j

it'knoWnthatI, OLIVER vVliLsoi\i,-a

tiitizen of the United States, and a resident of St. j-Edward, in Athe. county of Boone and Y) vState of Nebraska, have invented a/new and 1 ,improved Pi e and Rod Liamg Tongs, of. which the fol owing is a full, clear, and exact or rods which are to be'raised or lowered, and

4. with suitable hoisting means effect the transfer of such .material in a safe and convenient manner.

l `The invention consistsin the novel construction and. combination of parts, as is hereinafter described and defined in the ap,

pend *d claims. l

Reference is to be had toA the accompanying drawings forming a part' of lthis specifi# cation, in which similar characters of reference indicate corresponding parts in all the views.` Figure 1 `is aside View of the improved tongs, adjusted for receiving a pi e or tube, i indicated in dotted lines Fig. s is a side View of the tongs, taken olppositely from that shown in Fig. l'; and representing parts thereof ad'usted for gri ping a tube or rod .shown otted lines; 1g. 3 isan enlarged transverse sectional view of the im rove.

. ment, substantially on the line 3-3 in ig. 2;

Fig. 4'is an enlarged partly sectional side 45 view of a detail of the invention, and -Figl 5 is a transverse sectional view'of parts, taken substantially on the line 'f5-5 in Fig/4.

' Two similar lever bars 10, 10 are main elements of the invention, each-comprising a v50 flat bar of suitable metal, said bars being t l lapped upon each other and pivoted together j by a bolt @,at apoint somewhat near like ends bl which are lowermostin service.

Upon each of the ends b a jaw a is formed {S5-and projects at an' angle therefrom, these Specification of Letters Patent.

* Patenten May 2c, 190s'.

. r .y Application led January 31, 1908. SerialNc. 413,58*'1',` l

c rendered parallel with eachother from their points ofv junction with the llever bars 1'0 to the 'outer ends thereof. concave recess d is formed in 'each edge c, said recesses of an equal size being disposed o positely, as is shown in Fig. 3. The pai'- a lel side edges c of the jaws 10'l mayalso have serrations c formed thereon, as also appears in Fig. 3. The normally upper endsl c of the lever bars 10, which are equally dis- A scallop vor tant from thepivot bolt a, are laterally perforated, as at c', and in each perforation an oblong link 11 'is ldosely secured/b one end thereof, as indicated in Figs. '1 an 2.

The links 11 are of e nallength, and at their remainingends are oosely secured to a coupling ring l2, that is in service-enga ed by a hook 13.0n the pendent chain 14', t at is shown broken away but in complete con- 'ist dition is extended to a suitable lifting device,

not shown.

A tripping link is employed for controll of the lever bars 10 and, as shown, consists of two main portions 15, which' are hin ed to# gether at one end of each fportion, sai hinge g being preferably in the o having an eye-bolt h for a'pivot, the eye thereof projecting at one side, as is shown in Figs. l, 2 and 4. f y Each link portion 15 is longitudinallyre; cessed fromxa point near the hinge\joint to its other end and in'these rectangular recesses i, i twosiinilar 'extension members 15a' are fitted and secured.

One extension member l5.Et may be rigidly secured in place by rivets m, as shown at the right-hand end of the tripping link in Fig. 4;

but preferably the other extension member 15a at the left is` rendered adjustablelengthwis'eby forming a plurality of transverse per forations n'therein, that may be individually located opposite a similar perforationin the side Walls of the recess i and thus'be adapted for receiving a clamping bolt o which, when in place, maybe secured by screwing a nut o on its threaded end,-'and;hold theextension member projected a desired vextent from the l main portion 15, as is shown in Figs; lland 5;

, The outer end of one of the extension members l5a is lon itudinally slotted, as shown -at r in Fig. 4, an the outer end of the .other ex-4 tension member 15 is erforated at intervals, as shown at r in ig. 4, and said ends are pivoted through Asaid slot r and saidper-A forations r flat upon the leverzbars 310 at a similar jaws having their adjacent side eclgesjl suitable distance above' the pivot bolt a,

n of the tripping which, connection permits the main'portionI link to ilex downward if'pressure is ap to the hinge lor rule joint g.

Upon t e eye of the pivot bolth one end of a tripping chain or ro e 16 is'secured, and' thence may b e exten ed to a lower oint,

referably passing through a ring p. t at is oosely secured upon one of the lever bars 10 near the point of its pivotal connection with the other lever bar, as represented in Fig. 2.

The point of location and length of the members 15, 15a, comprisin the trippin link, will limit the degreeof iver ence ha by the jaws 10a, so that they may'. e spaced alpartl a suitable distance and retained in t eir diverged condition for receiving be tween their recessed edges the i cylindrical body of a shaft, piston rod, or a well tube, as the case may be.

In use as aineans for raising'or lowering a tube A, it is to be understood that the chain 14 isa dpendent portion ofthe usual rigging or tacl e employed-therefor, so that the im proved tongs will be suspended in a proper position for/en agement with one or more sections of a we l tube A'that is to be raisedor lowered It willl be seen that if the jaws 10a are diverged to their limit, and so retained by the tripping link, that is arranged as shown in` Fig. 1, the tube A may be' engaged therewith by inserting it endwise between. the jaws, or Ythe upright tube may receive the tongs at the upper end thereof, to adapt the jaws 10l for grip in a pipe or rod whereon they are mounte t e link members 15 are flexed at A their joint by a pull on the chain, then if the tongs are raised by' the tackle, the jaws 10a will grip the tube between the recesses d, and

hold said tube firmly without marring its surface, so that the tube maybe disposed verticallv and lowered down into a well bore. In alike manner, a tube that is to be withdrawn from a well bore may be gripped' by the improved tongs, and upon applying draft strain the tongs will firmly hold the tube until it is to be released therefrom.

It is evident that the improvement may also be utilized lfor grabbing other articles than such as are cylindrical, 'as the j aws 10a may be a plied upon structural beams of different s apes, and detachably secure such beams upon a lifting tackle for handling such material during the work of erecting a structure it is to be iliade a portion of, and to this end the serrations c serve to insure a, tight grip of the jaws 1()lL thereupon. Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A pipe or rod lifting tongs, embodying two flat metal lever bars lapped upon each otherarid pivoted together `wb.erefftlie arey lap ed, said pivot'bejng nearer the' ower en ofthe bars, a jaw projected'laterally from the lower end of eachleverfbarand scalloped in opposed led es,'.means,for' the elevation and sup ort of t le 'tongs,a tripping link that forme vof two extensible sections pivoted together at adjacent ends, and insana 7 0 or downwardly iiexing said l 2. A pipe or rod lifting tongs, embodying two flat metal lever bars of similar form,said bars being la ped upon each other and lpivoted where t ey are lapped, the pivot being' nearer one end of the b ars than the other, an`

integral jaw projected laterally from acorf I responding end ofleach lever bar, and having the opposite edgesl thereof substantially pm;-` allel with each other and having opposite scallops in said edges,and a `trippi'ng',linkl formed in two sections, a rule joint connect- I ing corresponding ends thereof, outer .ends' of the link sections being respectively slotted and perforated, and pivots connecting said outer ends with the respective leveij ba above their pivoted connection.

3. In a device of the character described,

the tripping link, comprising two main sections, a rule joint connection between adjacent ends of said sections, the bodies of said sections being recessed, and an -extensifn member adjustably secured in the recess of a respective section, the outer ends ofthe exioo the lever bars than the other, an integral j aw projected laterally from a corresponding end of each lever bar, the opposite edges of said jaws being substantially parallel with each other, said edges, near their centers, having oppositely scalloped recesses therein'and also having serrations in portions outside of the recesses, a tripping link pivoted by its ends upon the res ect-ive lever bars above the ivot connection of the latter, said link emodyingtwo main sections, a downwardly flexing rule joint connection joining adjacent ends of the link sections, said jointhaving an eye-bolt for a pivot, and a flexible connection extending from the rule joint downward.

In testimony whereof I have signed my name to this specification in the presence of AUBREY A. SMiTH, CARL l. RICH.

Images