US 1018208 A
Description (OCR text may contain errors)
A. M. PRINCE & L. GOSGIA.
APPLIOATIQN FILED MAY13, 1911.
' Patented Feb. 20, 1912.
Attorney States, residing, respectively, at Y pump pump cylinders 1 and" 3 near their upper usual in pumps.
-State of 'lenne-ssee, have invented certain .vented from twisting or jamming in the claimed.
"to adischarge spout 10.
of the pistons has connected toitb a pivot 14 a series of disks 18, 19, 20,, 21 and 22 ofwhich the upper and lower disks 18 and'22 are of metalwhile the intermediate disks j UNITED STATES PATENT OFFICE.
ADONIS M. PRINCE, OF WILMINGTON, NORTH CAROLINA, AND LOUIiA. GOSCIA, OF
' MEMPHIS, TENNESSEE.
To all whom 'ttmay concern:
Be it known that we, Anoms M. PniNoE and Loom. Cosom, citizens of the United lfilmington, county of New Hanover, State of North Carolina, and Memphis, county of Shelby,
new and useful Improvements in Pump-Pistons, of which the following is a description, reference being had to the accompanying drawings, forming a part hereof.
Our invention relates topumps and has for its object to provide means by which the travel of the piston in the pump cylinder shall be facilitated and the piston be precylinder.
With this object in vieu our invention consists in the construction and combination of elements hereinafter described and Referring to the drawings: Figure 1 is .a vertical sectional view of a double action having pistons embodying our invention and Fig. 2 is a. horizontal crosssectional view on line 2-2 of Fig. 1. p
In the drawings 1 and 3 are the cylinders of a double action pump the cylinders each having at its lower 'end an inlet opening 4 controlled by an upwardly opening valve 5 of usual construction. To'the inlet valves passages '6 lead from a pi e 7 leading to the well or other source 6 supply. In the ends are-discharge. openings'S and. 9 leading The construction thus far described is Each cylinder is provided with a piston 11 having-a central opening '12 controlled by .an upwardly opening valve 13.. Each,
:1. piston rod 15,, the upper ends-o "the piston rods being connected toa, walking beam 16 pivoted at 17 on-an'upright between the two pump cylinders. Each piston ll-comprises 19, 20, and 21 may be of metal or of other material. The disks 18, 19, 20, 21 and. 22 are of considerably less diameter than the interior diameter of the pump cylinder.
Specification of'Letters Patent.
Application filed May 13, 1911.
Patented Feb. 20, 1912.
Serial No. 626,981.
Between disks 19 and 20 is a disk 23 of flexible material such as leather or rubber and between disks 20 and 21 is a similar disk 24.
The disks 23 and 24 are of somewhat larger diameter than the interior diameter of the pump cylinder and their outer edges are turned upward as shown. The upper and lower disks 18 and 22 are provided at points 25-and between each pair of arms is journaled a rol1er'26. Four or more pairs of arms 26 are preferably provided on each of the disks 18 and 22. The arms 26 of disk 18 are preferably inclined upward and on the periphery with pairs of radial arms the arms 26 of the disk 23 are preferably inclined downward. The rollers 26 bear against the interior walls of the pump cyl-- inder as the piston is reciprocated and re duce the frictioii'of the piston to the least possible and by reason of the separation of the disks 18 and 22 and the inclination of the arms 25 of these disks the piston is pre-' vented from turning or twisting in the pump cylinder.
It will of course be understood that our invention'is not limited to its useincon'nection with double action pumps or even to use with lift pumps, but is applicable to any pump in which'a reciprocating piston is;
.1.A piston-adapted tofreciprocate in a cylinder, rollers distributed about the pec linder, rollers distributed about the pe- 90 riphery of the upper and lower faces of said I piston and adapted to bear against the'interior wells of said cylinder.
2. A piston ado. ted to reciprocate in a I riphery of the upper and lower faces ofsaid I piston and adapted to bear against the'in-'- terior walls of said cylinder, a disk of fiexi ble material, of" reater diameter than that of the cylinder, oeated between the'upper and lowerfaces of said pistonl 3. A piston adapted to reciprocate in a cylinder, comprising a series of disks of less diameter than that of the interior of the cylinder, radial arms carrying rollers distributed about the periphery of the upper and lower disks of said cylinder.
4. A piston adapted to reciprocate in a cylinder, comprising a series of disks of less diameter than that of the interior of the cylinder, radial arms carrying rollers dis tributed about the periphery of the upper and lower disks of said piston and adapted to bear against the interior Walls of the cylinder, and disks of flexible material, of
piston, and adapted greater diameter than that of the interior to bear against the interior walls of the of the cylinder held between the disks of less diameter than that of the interior of the cylinder.
ADONIS M. PRINCE. LOUIA GOSCIA. W itnesses:
RICHARD HARGRAVE, Leon A. STROUD, IRA M. SAINT, GLO. B. COLEMAN.