US313893A

US313893A - Tube-well

Info

Publication number: US313893A
Authority: US
Publication date: 1885-03-17
Anticipated expiration: 1902-03-17

Description

F. H. SMITH.

TUBE WYBLL.

No. 313,893. Patented Mar. 17, 1885.

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PATENT Tric.

FREDERICK H. SMITH, OF KANSAS CITY, MISSOURI.

TUBE- WELL.

SPECIFICATION forming part of Letters Patent No. 313,893, dated March 17, 1885.

Application filed November 11, 1884.

To a/ZZ whom it may concern.-

Be it known that I, FREDERICK H. SMITH, of Kansas City, Jackson county, Missouri,have invented certain new and useful Improvements in Tube-Vclls, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

The object of my invention is to provide tube-wells with such improved water-lifting devices as will render their construction and repair more certain of accomplishment, and their operation comparatively more reliable than heretofore; and it consists in the devices and combination of devices hereinafter described, and particularly pointed out in the claims.

In4 the drawings, Figure 1 is a section through the pump-cylinder, sand-shoe, and lower cheek-valve tube; and Fig. 2 is a like view of the cylinder and shoe having the internal parts removed therefrom. Each figure is constructed upon a plane with the vertical line x x.

It has been found in practice that, owing to the nature of the ground through which the greater number of tube-wells are bored, the cylinder corrodes, so as to be within a short time almost or entirely unt for service. In order to remedy this defect, I propose to galvanize the cylinder A both internally and `upon its outer surface.

Heretofore much difficulty was had in driving cheek-valves to their seat at the lower eX- tremity of the cylinder or driving-barrel. As there was practically nothing connected to them that would keep them in a vertical line with the cylinder they would, as it were, attempt to turn end for end therein, and in many cases would come to and be left upon their bearing in an oblique position. A check-valve under such circumstances cannot fully accomplish the object which rits name implies.

My improved check-tube L is closely encircled near its lower end by an annular ring, F, which has a diameter corresponding to the bore of the cylinder. When the said checktube is being driven to place, the drill-rod l? is attached to its threaded upper end, d, and the rubber packing-ring E, encircling the cone L upon the check-tube, and having a rect- (No model .l

angular outer surface, guides the upper end, and the ring F holds the lower end in a central position. The said packing-ring E tapers upwardly from its internal surface, a and is eX- panded by the correspondingly-tapered cone L. Each is constructed with smooth surfaces, for reasons explained further on. The checktube L can only be driven downwardly until the coned surface L comes in contact with a beveled seat, c", flared from thel internal diameter of the ring F at its upper edge, M. Heretofore, owing to the absence of such a seat to limit its movement, the check-tube has been driven so far within the packing-ring that the latter would interfere with the perfeet working of the valve, and the packingring (usually rectangular y in crosssection) could be compressed until when required its removal would be very difiicult, if not im- 7o possible.

The smooth surfaces of my. improved cone and the comparatively small body of rubber forming the packingring E render the withdrawal of the check-tube quite an easy matter. Vhen the check-tube has been fully driven to place, the lower edge, a, of the packing-ring is in contact with the upper edge, M, of the ring F. An internally-threaded thimble, K, is attached to thelower extremity of the cheektube, and prevents the same from being drawn upwardly without carrying with it the ring F. This latter is recessed internally at the lower end, f', forming a concentric shoulder, as, which is engaged by the upper edge, a, of the thimble K, as shown. The lower edge, a, of the ring F rests upon the top edge, a, of the sand-point coupling G. This coupling has an external diameter corresponding to the cylinder-bore, and its lower edge rests upon the concentric shoulder B', projecting within the shoe B. The upper end of the sand-point H is screwed within the threaded coupling G, as shown. The `cylinder may be provided at its upper extremity with a coupling, as C. The stem a of the valve D is held in a central position by the bridge-piece b, placed within the check-tube.

It will be noticed that the shoulder B projects at a right angle from the interior of the shoe sufficiently far to form a solid bearing for the lower end of the cylinder or driving- IOO barrel, so that in hard driving, where the barrel hasl to be driven a great depth, the strain will fall upon the shoulder and not upon the screw-threads of the shoe and the barrel. In addition to this, the said shoulder forms a solid resting-place for the sand-point coupling` G, with which it forms a tight joint.

I am aware that in tubular wells the shoe has been formed with a rib or shoulder upon its inner surface, said rib being tapered either way from its smallest diameter to prevent sand from lodging in its ascent or descent when sand-pumping, the purpose of such rib being to obviate the danger of losing different portions of the apparatus. Such a construction, however, does not answer my present purpose, for the lower end of the driving-barrel does not rest upon the described rib, the

strain in driving being all on the threads in the upper end of the shoe and upon the lower end ofthe driving-barrel. Should such threads break in heavy driving, the end of the drivingbarrel would Strike the downwardly-inclined surface of the rib and be vthereby turned inward to obstruct the downward passageof the sand-point. I therefore disclaim such construotionf What I claim as new, and desire to secure by Letters Patent, is

The combination, in a tube-well, of the pump-cylinder, the check-tube provided with a slnoothsurfaced cone near its upper end, the packing-ring having a Haring inner surface encircling the cone, and the ring F, upon the upper edge of which the said cone rests when the check-tube is in place, substantially as specified.

In testimony whereof I affix my si gnature in presence of two witnesses.

FREDERICK H. SMITH.

Witnesses:

WM. J. BERKOWITZ, GUs P. MARTY.