US905210A - Pneumatic pump. - Google Patents

Description

Patented Dec.,1, 1908.

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Vi M765 sea UNITED emigre PAEENT ()FFICE- CALEB W. MObRE', OF VANCOUVER, WASHINGTON.

To all whom it may concern: ,1

Be it known that I, CALEB W.. Moore, a citizen of the United States, residing at Vancouver, in the county of Clark and State of \vashingtoi'i, haveinvented a new and useful Improvement in Pneumatic Pumps, of which the following is specification, reference being had to the accompanying drawings.

My invention relates to the class of machines in which water is pumped by means of compressed air.

The object of my invention is to provide a pneumatic pump, with a specially arranged valve mechanism operated by a single float in one cylinder. This and other advantages are attained by the mechanism, construction, combination and arrangement of parts illustrated in the accompanying drawings which form a part hereof- Figure 1 1s {a view in vertlcal sectlon with parts not broken away.

A and B are two chambers.

C is a pipe through whichpneumaticpoweris supplied from a convenient source of such power.

1 and 2 are perforated globe receivers, secured to the bottom of chambers A and B respectively and each of them is provided with a foot valve122 as appears in 1.

Discharge pipes 14-14 extend from near the bottoms of chambers A and B to a common discharge pipe 10. The discharge pipe 14 has a valve chamber 3' within which is a valve 3 provided with a slidably mounted valve stem 4. Within the valve chamber 23' of the pipe 14 is a similar valve.

Within chamber A is a vertical rod 5 "mountedat its lower end in a recess 5.

Upon this rod 5, buttons 6 and 7 are rigidly secured in convenient places near its ends. A float 8 is slidably mounted upon the rod 5 between the buttons. The upper end of said rod extends above and-withoutthe chamber A and into. a cylinder 9. Rigidly secured to the upper end of the rod 5 and within the cylinder 9, is a piston valve 9. The pi e C opens into the cylinder 9. Extending rom the upper and lower ends of the cylinder 9 is an exhaust pipe 16 which opens into. a common exhaust pipe 17. I

A cylinder pipe 15 extends from near the upper end of the cylinder 9. into the upper of the chamber A.

A cylinder pipe 18 extends from near the lower end of the cylinder 9 into a valve chamber 13 which opens into the upper end PNEUMATIC Patent d Dec. 1, ions.

j of the chamber B. The rod 5 also extends upwardly and out of the cylinder 9 and has a transverse pin 20 secured to its upper end,

which pin is mounted in the slot of a forked 0 arm 19, pivotally mounted in a bearing 19. A spring2-1 is secured at oneend 'to an arm 21 and to the forked arm 19 at its other end.

mounted at its lower end in "arecess'll'a The said rodhas a float rigidly secured in a suitable position near its lower end. The upper end of the rod 11 extends into a valve Within chamber B is a vertical rod 11 5 chamber 13 upon the upper en of the chamg b'er BL Within this valve 0 mber, the rod 11 is provided with a check .alve 13'.

In operation the chambers A and B are submerged. Inthe position shownchamberl A is discharging and chamber B. receiving liquid. It will thus be seen that pneumatic power-being admitted from the pipe G into the cylinder 9 while valve '9 is in the position shown, the air passes through the cylinder into chamber A by means of the connecting pipe 15 and forces the liquid to close the foot valve 22 and to discharge through the pipe 14. At the same time the foot valve in globe 2 of chamber B. is open and water I is flowing into the chamber, forcing the air therein through cylinder 13 and 'pipe 18 out through exhaust pipes 16 and 17 while its valve in chamber 23 is closed by downward pressure. Thefioat 8 is in the dotted line position 8 atthe beginning and had 9 0 then engaged the button 7 and raised the piston valve 9 fi'the positionshown. As the water recedes the float 7 slides downward until it engages button 6 and by its weight in conjunction with the spring 21, depresses the rod 5, which in turn lowers the piston valve 9 to the lower end of its cylinder 9. When this occurs the pipe 15 will be opened through the c linder into communication with exhaust ipes 16-17, the foot valve 22 opens, admittlng the water and the check valve 3 closes by downward pressure in the pipe, 14.- At the same time the spring" 21 holds the rod 5 in the lower position by means of the arm 19, and the power pipe delivers the air pressure through the-cylinder 9.,zmd'the pipe 18 and valve chainber 13 into "chamber B- forcin the liqindout,.of same as previously escribeddregarding chamber A, f

The function of the rod-:11 in chamber B is to provide against a difference in time or of water when the air pressure is at out to be changed from chamber A to chamber B. That is to say, when chamber B is sufficiently emptied the float 12, by its weight at low water, will de ress the rod 11 thereby closing the check va ve l3 and preventing any further pressure of air in chamber B should the rod- 5 in chamber A not respond at the proper time to move the piston valve 9 and shift the pressure to that chamber. The object of the check valve is therefore auxiliary, while the piston valve 9 is the single air controlling valve of the entire device.

It is my intention that my pump shall be composed of either one or two chambers and the same mechanism I have herein described may be ada ted to and placed within and upon a sing e chamber with like results as herein described and the elimination of one chamber with the use of my arrangement of valves and inlets or outlets for air or liquid will not be a new device composed of a less number of parts than mine. There is no other device known to me in which a single controlling pressure valve is arranged to control pneumatic pressure as mine does. It may be used by fire engines to take Water from rivers, for irrigating land, or hy draulic engines.

Reference is hereby made to my application Ser. No. 422,756 filed on the same day, for an improvement in air compressors, and in which a valve mechanism somewhat similar to this is shown but wherein the combinations and arrangements are different.

Having thus described my invention I claim:

1. A pump 'of the character described, comprising chambers A and B each having a valved liquid inlet at bottom, a valved discharge pipe from near the bottom extending into a common discharge pipe, pressure con trolling mechanism consisting of a vertical rod 5 within chamber A, slidably mounted at its lower end in the bottom of said chamber, the rod having rigid buttons thereon near its upper and lower ends and cal-lying a slidably mounted float bet ween the buttons,

a cylinder 9 above Cllilll'lbifii having a pipe C extending from near its center to a power source, a pipe 15 extending from near its center into the upper end of said chamber, a pipe 18 extending from near the lower end of said cylinder into the upper end of chamber B, exhaust pipes extending from the upper and lower ends of the cylinder, :1 piston valve 9 rigidly secured within the cylinder upon and nearthe upper end of the trolling means, an auxiliary l ping mechanism consisting of in slots in its arms a transverse pin of the rod 5 which extends without the cylinder 9, and an actuating spring 21, also auxiliary pressure stopping mechanism, consisting of a vertical rod 11 Within chamber B, slidably mounted at its upper and lower ends and carrying a float 12 rigidly secured upon and near the lower end of the rod which extends into a valve chamber 13 at the top of the chamber B, and a downward seating valve 13 within the chamber 13, rigidly secured to the rod 11, substantially as described.

2. In a pump of the character described, having chambers A and B, each provided with valved inlets and outlets, the combination of pressure controlling mechanism consisting of a vertical rod 5 within chamber A, slidablv mounted at its lower end in the bottom of said chamber, the rod having rigid buttons thereon near its upper and lower ends and carrying a slidably mounted float between the buttons, a cylinder 9 above the chamber A, having a pipe C extending from near its center to a power source, a pipe 15 extending from near its center into the upper end of said chamber, a pipe 18 extending from near the lower end of said cylinder into the upper end of chamber B, exhaust pipes extending from the upper and lower ends of the cylinder, a piston val e 9' rigidly secured within the cylinder upo l and near the upper end of the rod 5, with auxiliary pressure stopping mechanic n, consisting of a vertical rod 11 within chamber B slidably mounted at its upper and lower ends and upon and near its lower end, a valve chamber 13, into which the rod extends at its uppcrend, and a downward seating valve 1; rigidly secured upon and near the upper end of said rod within valve chamber 13, substantially as described.

3. In a pump of the character described, haviii chambers A and B, provided with valvef inlets and outlets and pressure conpressure stopa vertical rod 11 within chamber B slidably mounted at its upper and lower ends, and carrying a iloat l2 rigidly secured upon and near its lower end, a valve chamber 13 into which the upper end of the rod extends, and a downward seating valve 13 rigidly secured upon and near the upper end of said rod within the valve chamber, substantially as described.

rod 5, valve moving means consisting of a forked arm pivoted at one end and receiving CALEB \V. MOORE. Witnesses V. \V. \Vxoonnn, M. C. VVRieH'r.

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