US229354A - balliet - Google Patents

Description

(N-o` Model.)v 2 Sheets-Sheet 2.

f ILBALLIET. Pump Rod Adjuster forv Oi-l Wells.

v liz/@702.6271 am@ w NJErERS. PHoTo-LITNDGRAPHER, WASHINGYON. D. C.

UNITED STATES PATENT (Erica,

HENRY BALLIET, OF OLEAN, NEW YORK.

PUMP-ROD ADJUST-ER FOR OIL-WELLS.

SPECIFICATION forming part of Letters Patent No. 229,354, dated. June 29, 1880. Application nlea April 23, 1880. (No model.)

To all whom it may concern:

Be it known that I, HENRY BALLTET, a

citizen of the United States, residing at Olean,` ,in the county of Gattaraugus and State of which are employed for the purpose of connecting whatis comnlonly known as the polish-rod of pumps for oil or Artesian wells with the working-beam. The great strain upon the polish-rod renders it essential that the trunnion-head, which connects it with the working-beam, should hold the rod very firmly' in order to prevent its slipping. It is also dej sirable that the trunnion-head should be of simple and durable construction, and that the parts which clamp the rod should be adapted forl the convenient adjustment of the polishrod, as required.

The objects of myimprovelnents are to wedge the polish-rod jin a mortise of peculiar shape formed through the trunnion-head, through which the rod passes, without the aid of loose orindependent wedges; to provide an adjustable cylindrical bearing-jaw inclosed within a walled recess in the trunnion-head, so as to act in opposition to the wedge action of the cross-head mortise upon the polish-rod, Whereby, in the adjustment of said bearing-jaw, the polish-rod will be both clamped and wedged. A cylindrical passage leads through one of the trunnions to the walled recess of the bearin gjaw, so that said bearing-jaw can be intro- .duced at the end of said `trunnion and passed along through the trunnion-head to its sea-t in the walled recess.

Referring to the accompanying drawings, Figure l represents a vertical sectional view ofthe trunnion-head and a portion ofthe polish-rod secured therein 5 Fig. 2, a silnilar View with the polish-rod removed; Fig. 3, a horizontal section, showing the polish-rod griped by the wedge action of the mortise through which it passes; Fig. 4, a cross-section through the mortise of the cross-head, looking in the direction of the bearing-jaw, the polish-rod being removed 5 i Fig.- 5, a similar section, looking in the direction -of the angular corrugated land seated in the line of the trunllions.

sides of the mortise, and Fig. 6 the cylindrical bearing-jaw.

The head proper or cellter A and the trunnions t a are formed ill one casting, and in its application for use the trullnions are journaled in the bifurcation of the forked end ofthe working-beam, as is usual in this class of devices. A nlortise, B, is formed through thc `head or center, `through which the polish-rod :is passed. The distinguishing fea-ture of the mortise is that it is heart-shaped, so that when the polish-rod is clamped by the devices presently described, it will be forced toward the allgular portion ofthe mortise, the sides b b of which serve as wedges, thus dispensing with independent wedges and adding to the ciciency of the clamping devices in securi n g the polish-rod to the trunnion-head.

The head or center A is formed with a walled recess, C, which opens into the transverse mortise of the trunnion-head coincident with the `axis of saidtrunnions, and wllich is designed to receive a bearing-jaw, D, of cylindrical form This bearing-jaw consists of a cylindrical block hav- 'ing one end concaved, as at d, such concavity being made with reference to the size of the polish-rod, in order that the bearing will lap and fit closely to the said rod to nearly the extent of a semicircle. thisf bearing-jaw lnay be roughened or corrulgated, so that it will take a better bite upon the polish-rod, and the sides of the angular The concaved end of portion of the transverse mortise through the ltrunnion-head may also,v be roughened or corrugated for a similar purpose. These corru- `gations are fornled so as to be at right angles linto the walled recess which contains the bearing-jaw D. In the drawings the set-screw is represented as being formed with a cylindrical end bearing-pin, F, which is passed through a passage in the bearingjaw D. This pin F, however, may be dispensed with, so that the end of the set-screw alone acts upon the bearing-jaw. In either case the bearing-jaw will be effectively clamped against the polish-rod by turnin g the set-screw, andthe said rod will, by such action, be forced toward the angular part of the mortise and thereby firmly wedged and held in place. l

It is, of course, understood that in the abovementioned instance, where the pin is formed upon the end ofthe set-screw, the area of the Openin g through the bearing will be sufficiently great to admit of the free rotation ofthe pin conjointly with the turning of the set-screw.

In order to seat the bearing-jaw within the walled recess, the trunnion which is opposite to that trunnion through which the set-screw is passed is formed with a central bore, G, which opens into the mortise B. rlhe bore through said trunnion is of su'liicient area to admit of the passage of the bearingjaw, which is first introduced into the outer end ofthe bore and then passed along until it reaches the mortise, and as a continuation of said bore the area of the mortise will at this point be sufficiently enlarged to admit of the further passage of the bearing-jaw into the walled recess, such enlargement being on opposite sides of said mortise and forming guides c to said jaw in its passage across the mortise.

The bearing-jaw is of such dimensions that it can by nopossibility drop out through either end of or turn in the mortise B, and hence, in case of the detachment of the polish-rod from the trunnion-head, there will be no liability of the falling out of the bearing-jaw. rI lhe trunnion last mentioned is screw-tapped at the end ofthe bore, and a screw-tap, H, is fitted to such end, so as to close the bore after the bearingjaw has been introduced and passed to its proper position.

It will be observed that the enlargement of the mortise to admit ofthe passage of the bearing-jaw constitutes two guide-channels, c, for said jaw at opposite sides in the mortise, said channels running parallel with the axis of the cross-head.

It will also be seen that the walls of the recess C converge into said channels at e', such yconformation being required in order to bring the concave face of the bearing-jaw flush with the wall ofthe mortise, or at least topre-vent the bearing from presenting any obstacle to the insertion of the polish-rod through the mortise.

After the bearing-jaw has been placed in proper position within the walled recess and. the polish-rod passed through the mortise in the trunnion-head, the set-screw will be tightened up until the rod has been rmly griped between the concave face of the bearing-jaw and the walls of the angular portion of the heart-shaped mortise.

The trunnipns will, during operation, have the usual rotary movements in their bearings incident to the working of the pump.

By having the gripe upon the polislrrod in the line of the axis of the trunnions the strain upon the clamping parts is concentrated and very much reduced, and the clamping-screw is not so liable to work loose; and, in connection with such arrangement, it is important that the gripe upon the rod should be as effective as possible. It is for this purpose that I make one side ofthe cross-mortise in a head having side trunnions of angular form, and opposite this angular side, within an inclosed recess, and midway between the ends of the mortise, the cylindrical bearing-jaw is seated within a cylindrical recess open at both ends in the line of the axis of the trunnions, and of a diameter just about equal to that of the polish-rod, so that the gripe is made at a point between the ends of the mortise and within an area less than the diameter of the trunnions, the effect of 'which is to give a long bearing for the rod within the mortise and a comparatively short griping-surface arranged at a point to exert the most effective clamp upon the rod. The action of this griping-plug is infinitely more reliable than that of a screw and gives a far better bearing than could be obtained by a pressure-block of equal length with the crossmortise,`whether kept to its set by a screw acting at right angles to the axis of the trunnions or a cam-lever acting in the line of the axis ofthe trunnions upon such long pressureblock.

lhe important matter is to get a long bean ing in the cross-head and a short and perfectl y effective and reliable gripin g-point upon the rod in theline of the axis of the trunnions,

An angular mortise within which thepolishrod is clamped and within which it is adjusted is not claimed, broadly; but such form of mortise crossing the axis of the trunnions, in connection with a griping-jaw of cylindrical form placed in the line of said axis and of a diameter less than that of the trunnions, has functions and advantages not possible in the former plans.

But there is still another point of great importance in my invention, and that is that the interception orinterruption of the angular sides or walls of the mortise by the trunnion-bore Gr practically divides the bearing, so that there will be no contact of the rod at the crossing of the trunnion bore G; or, in other words, there will be no bearing-point for the rod in the mortise directly opposite the cylindrical griping-jaw, and therefore the rod will be practically secured against'the angular mortise- Walls at points on each side of the trunnionbore, because the griping pressure of the jaw will be opposed to the rod at a point inline with and opposite a space which affords no bearing-surface for the rod. The pressure upon the rod at this point will give it an inappreciable bulge or spring, and therefore effect a IOO IIO

secure and positive gripe at two points of bearing, beyond which the rod cannot slip, because the rod will practically have a bearin g on each side of the bore G, with the pressure-jaw in intermediate relation thereto and on the side of the rod opposite to said separate bearings.` The bore G is therefore not only important as a way through which the cylindricalbearin gjaw is introduced to its seat, but as the means of forming the cross-division in the niortise and open back opposite the pressure-plug.

I claim- 1. The combination, in an oil-Well pump, of the trunnion-head having the trunnions a. a, -the mortise B, formed with angular sides b b, divided in theline of the axis of said trunnions to form a non-bearing interval, with the clamping-jaw in position opposite to and in line with said intermediate non-bearing interval for the purpose of holding` the polish-rod, substantially as herein set forth.

2. The trunnion-head of an oil-Well-rod adjuster, having the angular mortise B, the trunnion-bore Gr, forming a junction with said mortise, the opposite trunnion having a screwthreaded axial opening and a cylindrical recess larger than the said screw-opening and communicating therewith and with the crossmortise B, and adapted for use with the cylindrical bearing-jaw to hold the polish-rod, substantially as herein set forth.

3. In a polish-rod adjuster for oil-wells, the combination of the trunnionhead, having an angular cross-mortise, with a cylindrical bearin g-jaw havin gaconcave end and seated within an inclosed recess of corresponding form in one side of said mortise, and a screw, E, ar-

ranged axially within one of the trunnions to enter said recess and act upon the cylindrical bearing-jaw to hold the rod, substantially as herein set forth.

4. The trunnion-head formed with a walled recess at one side of a mortise formed'trans` end of the saidtrunnion, substantially as and for the purpose specified.

5. In a trunnionhead adapted to connect the polish-rod with the working-beam in apump for oil or Artesian wells, the heartshaped mortise B, enlarged at a point between the Walled recess C and the bore G of one trunnion, whereby to provide a guideway for the bearing-jaw in its passage to the Walled recess, substantially as set forth.

6. In a trunnion head adapted to connect the polish rod with the walkingbeam, the trunnion-head A, formed With a heart-shaped or angular mortise, through which the polishrod passes, in combination with the bearingjaw arranged for action upon the polish-rod in direct opposition to the point or angular sides ofthe said rnortise, substantially as herein set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

HENRY BALLIET.

Witnesses:

M. A. DODGE,

A. H. ABBEY.

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