US1774103A

US1774103A - Pull-rod carrier

Info

Publication number: US1774103A
Application number: US88419A
Authority: US
Inventors: Thomas A Miles
Original assignee: F H ZINN
Current assignee: F H ZINN
Priority date: 1926-02-15
Filing date: 1926-02-15
Publication date: 1930-08-26
Anticipated expiration: 1947-08-26

Description

Aug. 26,1930. T, A, MILES 1,774,103

PULL ROD CARRIER Filed Feb. 15. 1926 2 She ets-Sheet 1 INVENTOR ATTORN EY Aug. 26, 1930. I T. A. muss PULL ROD CARRIER Filed Feb. 15, 1926 7710/7745/7. M/ 763 BY ATTORN EY Patented Aug. 26, 1936 UNETED ATES,

', THOMAS Minus, or sAr LPA, oKLAnoMA, Assre-non or ONE-HALEJTO r. H. zrnn,

or ruLsmoxLAHoMA BULL-Ron CARRIER Application filed February 15, 192 Serial mes 119.

My invention relates to pull rod carriers and more particularly to a carrier for supporting the pull rod 'of'an oil Well pump intermediate the pump and'the power mecha- '5 nism whereby the pump is operated. I

It. is common practice in oil fields where a number of wells are located in the same vicinity and on the same property to install a power mechanism-at a relatively central 10 point and extend pull rods from the single power mechanism to a number of wells, so that all of the wells in thegroup may be pumped simultaneously from the single source of power, The pull rods employed '15 for this purpose usually comprise sections or joints of steel rods twenty-five feet in length and five-eighths,three-fourths or seven-eighths inchin diameter, a sufdcient number of joints being clamped endto end to extend from the power to the well, and hav- I ing the rigidity to push and pull'thepumping element to effectthe pumping operation. In order to avoid frictionof the rods on the ground, the rods are usually supported on 9 carriers and as the groundis frequently uneven, it is necessary at some points to support the rod and at others to hold it down in order that proper working connection may I be made between the power and pump.- I It is the object of my invention to provide adevice'which maybe employed either "as a support or hold-down, and in either instance to provide a roller bearing for the rod which will be operable under varying conditions of 5 temperature and weather, without the usual close attention to'lubrication and other requirements ordinarily encountered with the type of carrier heretofore in common use. I

In accomplishing this object I have pro- 40 vided improved details of structure, the pre-' ferred forms of which are illustrated in the accompanying drawings, wherein Fig. 1 isa'perspective view of a group of oil wells and a power mechanism with pull rod connection between the powerandpumps,

particularly illustrating uneven topographical conditions encountered the employ? ment of such structures.

v Fig. 2 is a detail perspective View ofacar to a central rier, showing the several but relative relation. Fig. 3 is an enlarged detail perspective view of acarrier with its rod, a part of the carrier being broken away for better illus tration. 1 I, v

Fig. 4 is atransverse, vertical section of the same. i

. Fig. 5 is a longitudinal, vertical section of the-same. v

. Fig. 6 is a transverse, vertical section of the device, illustratingits use as a hold-down.- I I Referring more in detail to the drawings, i

and withspecific-reference to one of a plurality of oil wells in a group withits connection to the power mechanism,

parts in separated 1 designates anoil well and 2 a pump rod f extending from the top of the well. Located adjacent the well is apump derrick 3 carrying a lever 4, one arm. of'which is connected with the pumprrod and the other with the usual pull rod 5, which extends in sections power, mechanism 6 of conventional form. 3

Located at suitable-spaced intervals between the well and power are carriers for the pull rod, those. illustrated hereinbeing constructed. in accordance with my. invention andcomprising the following detailsof structure The'hodyof the carriercomprises a house ing 7 of sheet metal of proper gauge stamped an open top, the housing being substantially square in crosssectionand of sufficient length limits of its'operative travel.

Thebearing consistsof a circular block 10 of hard wood or metal having a central,

" to form a-closed bottom 8, side walls9 and .to accommodate a roller hearing within the' order to confinethe roller bearing for free travel but without lost motion within the housing and with a minimum of frictional contact against the housing walls, I expand the sides of the housing longitudinally as at 12 and 13 and restrict the upper and lower portions of the side walls to'form the railparts l4-15 and 16'17, the rails forming guides against which: the ends of the, bearing may have limited frictional contact during its rolling travel on the bottom 8.

The side walls are inturned at the upper edges of the

rails

16 and 17 to form

keeper flanges

18 and 19 whichconfine the roller bearing against vertical. displacement from the housing, and the inner edges ofthe keeper 'fianges are extended upwardly and li-pped as at 20 and 21 to carry a cover 22, The cover 22 is preferably bent upon itself to form the

edgegrooves

23 and 24 for receiving the

lips

20 and 21 when the cover is slid over the upper edges of the housing to enclose the housing after it has been applied to a pull rod.

The bottom and side walls of the housing are inturned to form the stop portions 25 and guide flanges 26, and the bottom of the house ing is upstruck to form the keeper lips 2?. The

upper rails

16 and 17 are back out from the'fianges 26 to provide spaces for receiv ing the sliding doors 28 which are adapted for pro ection into the housing within the flanges 26 and between the stops 25 and keeper lips 27, the upper edges of the door memhers having concaved recesses 29 through which the pull rod may extend, the depth of the recesses being such that when the rod is supported on the roller hearing within the 7 housing it may work freely within the recessesot the door members. The door members may besecurely attached 1 to the housing by cotter pins 30 or other fastening devices which may be extended throughapertures 31 in the door members forms the ground support for the carrier.

WVhen the device is intended for use as a hold-down as distinguished from a support,

- a plate 36 may be welded or otherwise rigidly and permanently connected with the free edges of the housing member and inturn welded to the pin 34, so that the housing member may be inverted to locate the roller hearing over the pull rod as distinguished from location of the roller beneath the same when the device is employed as a carr er.

Assummg the carrler to be constructed as described, its use is as follows: 7

Ground supporting members 35 are located between the power and well in sutficient number andproperly spaced to provide one sup-' port for each joint of rod. The housing having been constructed as described and welded to the top of an anchor pin, is mounted on the ground support, a roller bearing seated within the housingthrough one of the end openings and the doors fastened in place to close the ends of the housing and confine the bearing. The pull rod is then seated on the roller bearing within the housing and the cover slid into place to confine the rod. When the rod is supported from the carrier at proper intervals between the well and power, and the power operated, the rod is reciprocated back and forth to operate the pump. During its reciprocation the rod rotates the roller bear "ingwithin its housing, the range of movement of the bearing being slightly in excess of the extent otreciprocation of the rod to avoid contact of the bearing with the ends of the housing. ;It isapparent that under this operation, the bearing rolls on the bottom of the housing in limited frictional end contact with the rails of the side walls and without lost motion, due'to the dimensioning ol the housing relative to the size of the roller.

With such a construction no lubrication is necessary asthere is no sliding contact of the rod with the carrier, but only a rolling contact of thebearing with the bottom and side rails of the housing member.

Should i be necessary to replace the hearing, one of the doors may be removed, the bearing member rolled out of the housing and a new one rolled in. If a rod is to be replaced, the cover or" the housing may be removed, the rod lifted out of its seat therein, and a new one installed;

It is apparent that whether the device is employed as support or a hold-down, it will perform its function with a minimum service requirement and expense of upkeep, and with a better average of performance than is possible with the type of carrier now in comm-en use, in that it is not subject to failure of lubrication because 01" melting grease in hot weather and hardening grease in cold weather, nor to the grinding wear incident to sliding surfaces l i hat I claim and desire to secure by Letters Patent is:

1. In a pul rod carrier, a housing formed from a single piece 015' sheet metal including a fiat bottom and side walls, and a. cylindrical bearing member having rolli 52; support on the flat bottom of the housing and provided with a peripheral rod groove and, removable means for closing the ends of the housing.

2. In a pull rod carrier, a housing formed from a single piece o1 sheet metal including a fiat bottom and side walls, and a cylindrical bearing member having rolling support on the fiat bottom of the housing and provided Wlbh a peripheral rod groove, the sides of the housing being stamped to form upper and lower longitudinal guide rails and intermediate portions spaced trom line of contact with the enos of the bearing member.

3. In a pull rod carrier, a housing formed from a single piece of sheet metal including a flat bottom and side walls, and a cylindrical bearing member having rolling support on c the flat bottom of the housing and provided with a peripheral rod groove and means for closing the ends of the housing comprising keeper lips on said walls and gate members slidably engaging said lips.

4.; In a pull rod carrier, a housing formed from a single piece of sheet metal including a flat bottom and side walls, and a cylindrical bearing member having rolling support on the flat bottom of the housing and provided witha peripheral rodgro0ve,-means for closing the ends o1 the housing comprising keeper lips on said walls and gate members slidably engagingsaid lips, and means for closing the top of the housing comprlsing longltudinal guide flanges onrsaid sidewalls and a cover member slidably engaging said flanges.

. 5. A pull rod carrier including a sheet metal housing having a flatbottom, and side members bent to form upper-and lower lateral guide rails, overhanging keeper flanges hav ing'lipped free edges spaced on the top of the housing, the side members being bulged between the upper and, lower guide rails to avoid frictional contact with a contained bearing, a cylindrical block'having rolling bearing on the bottom of the housing and confined by the guide rails and keeper flanges and having a peripheral rod groove, and a cover member slidably confined by thelipped edges of the. side members. V

6. A pull .rod carrier including a sheet -'metal' housingha'ving' a flat bottom, and side members bent to form upper and lower lateral guide rails, overhanging keeper flanges having lipped free edges spaced at the top ofthe. housing, the side members being bulged betweenthe upper and lower guide rails to, avoid frictional contact with a contained bearing, a cylindrical block having rolling bearing on the bottom of the housing and confined by the guide rails and keeper flanges and having a peripheral rod groove, and a cover member slidably confined by the lipped edges of the side members, the bottom having upstruck lips near the ends of the housing. and the bottom and. sides having inturned stop flanges at the ends of the housing, and

door members engaging the stop flanges and upstruck lips to close the ends of the housing. g

In testimony whereof I ailix my signature.

THOMAS A. MILES.