US515183A - weatherhead - Google Patents

Description

(No Model.) 2 Sheets-Sheet I. E. H. WEATHERHBAD.

HYDRAULIC AIR PUMP.

Patented Feb. 20, 1894.

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ETENT EETCE.

EDVARD H. WEATHERHEAD, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVELAND FAUCET COMPANY, OF SAME PLACE.

HYDRAULIC AIR-PUMP.

SPECIFICATION forming part of Letters Patent No. 515,183, dated February 20, 1894.

Application iiled January 31, 1893. Serial No. 460,2'46. (No model.)

To all whom t may concern:

Be it known that I, EDWARD H WEATHEE- HEAD, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and Stat-e of Ohio, have invented certain new pump, showing the valve closed and the pluncylinder.

ger piston down. Fig. 2 is a vertical central section corresponding to Fig. 1, with the valve ope'n and the plunger piston in the top of the Fig. 3 is a vertical central section of the top of the cylinder taken at right angles to Figs. 1 and 2. This figure is designed simply to illustrate a form of valve mechanism for the inlet and outlet of air, but it is not claimed that there is any special novelty in this construction, and the said mechanism might be changed without affecting kvmy invention. Figs. 4 and 5 likewise are vertical central sectional views of my improved pump,

corresponding to the views shown in Figs. 1 and 2, but having a float for operating the valve instead of a plunger or weighted piston, as in Figs. 1 and 2.

In both forms of pump here shown all the elements are the same except the piston or oat. Thus we have the base A in the several views and the cylinderB fixed upon said base. The construction of this base is not a material point except as it comprises the following features: a through passage for the pressure fluid consisting of what has the appearance here of a pipe or tubular section 2, which has its mouth, in this instance, about upon a vertical central sectional line within the said base, and constructed to form a valve seat 3, and a discharge 4 outside said base or 5o casing. The said pipe or tube section 2 is shown here as formed integral with the base, butit might be formed separatelyand screwed into the base.

The water inlet consists in a short pipe section or coupling 5, provided with a contracted inlet opening which operates on the principle of an ejector as it discharges the water through this comparatively small orifice into the pump, or through the intervening space i-nto the outlet passage from the pump. The part 5 itself is here shown as having a oo ntracted opening 6, but a separate nozzle with a small orifice or passage might be attached to said part and serve the same purpose. This pipe 5 is screwed into the base and is threaded for the attachment of the supply pipe connections.

The base or casingAof the pump is closed about its bottom and sides except the inlets and outlets for the water just described, and it will be noticed that the direction of the inlet and outlet is the same, and that it is straightthrough thebase of the pump froni side to side. It will also be noticed that there is a space interveningbetween the nozzle or discharge 6 of the inlet and the valve seat 3 of the outlet 2, and the valve 7 is so arranged as to swing in this space and occupy the seat 3 when the pump is filling, and to swing away therefrom and open the discharge pipe when the pump is discharging, as will now appear. "Thus, l have provided a pivot S in said base upon which is a crank arm 9 supported at one end upon said pivot and having the valve 7 rigid with the other end. At the angle of this arm I connect the valve operating rod 10. Likewise integral or rigid with the said angle arm is a counterweight 1l.

Now, in the operations of the pump, it is designed thatthe valve 7 shall be automatically opened and closed and that the pump itself will effect this result by reason of the water pressure and without any personal attention.

Hence, I have arranged within the said cylinderB a plunger or piston C, suitably packed to prevent the escape of water about its sides into the chamber behind or above the piston, and designed to respond to the Water pressure which enters beneath the same and to ICO rise under said pressure and expel the air which has been admitted into the upper'end of cylinder B through the valve passage in the top of the said cylinder B, as is wellknown in this art.

Connected with the `piston C, Figs. 1 and 2, is a pipe section or tube D, fixed to said piston and extending upward from the same and closed so that the water will not pass through it. The valve operating rod has its upper end extending into the said pipe or tube, and has a limited movement therein. Thus, referring to Fig. l we see the piston C down to its lowest position. When in this position the Water has been discharged from the pump and the pump is ready to be again filled. Hence, the valve 7 is seated and the transverse Water passage through the pump is closed. The water which now enters through the inlet opening 6 is confined in the pump and necessarily fills the same. In response to this filling and pressure they piston 'C will rise until the Weighted portion thereof having its upper extremity at c rises to the top of the cylinder B in position yas seen in Fig. '2. v

It will be ,noticed that there is a coiled spring 12 about the upper end of the operating rod 10 within the tube D, and this spring ordinarily is distended as shown, for example, in Fig. 1. When the piston C rises in the cylinder to a sufficient elevation, it compresses this spring until all the spring practically is taken up, when the compression of the spr-ing ceases and the valve 7 is forced to respond to the further pull of the rod 10. It will be understood that when the valve 7 is seated there is a constant pressure against it 'from the inlet and the, water above, so that it would remain upon `its seat if not forcibly withdrawn therefrom. The spring 12, therefore, undergoes full compression before the valve 7 is acted upon'bythe rod 10, and when the ysaid valve is raised from its seat by the pull of the piston, the spring likewise exerts an upward pull and assists in a speedy and wide opening of the said valve, so that there can at once occur a free and full discharge of the water in the pump. In Fig. 2 the valve 7 is shown as open. In this position the counterweight 11 co-operates with the said spring and it serves to keep the valve 7 raised, as seen in Fig. 2, until it is forced down by the piston C.

It will be noticed that there is a head 14 on the rod 10, and when the valve 7 is open this head is some distance above the piston rest or stop 15. Hence, when the said piston descends as the water is discharged from the pump, it engages the head 14 or its equivalent and bears the said rod down until it reaches its seat, or until the valve is pressed to its seat. This accomplished, the discharge is again closed. Then refilling ofthe pump occurs as' before described, and the piston C is made to respond to the upward pressure until it again reaches the upper limit of its stroke,

as seen in Fig. 2. The counterweight 11 holds the valve 7 and the rody 10 in the position seen in Fig. 2 until the superior weight and downward pressure of the piston C overcomes this balance and the valve 7 is closed. lt will also be noticed that there is a constant iiuid pressure` in the base A, the inlet being Without a valve or means tov close it, While the discharge passage alone is provided with a valve or closing mechanism.l Hence, there is a volume of water issuing through the jet opening 6 at the time the pump is discharging, and this promotes a rapid discharge of the water from the pump, which is so desirable.

Referring to Fig. 1, it will be seen that there is a valve 17 in the upper extremity of the air and water chamber B having an arm or stem 18 fixed thereon, and hung on a pivot 19 in the angle of said valve .and arm. It will also be seen that there is a passage way in the form of `a tube or pipe 20iextending down upon Vthe outside of the cylinder B from the top thereof tothedisc-harge 4. This opening into the top of cylinder B serves two purposes. First, to discharge any water that may creep into the cylinder above the piston C, so as to keep the said cylinder clear of` water above the piston, and .to relieve the back pressure of the air abo-ve `or behind the said piston C when .the upward stroke of thesaid piston is about complete, so that there may be a stronger and quicker pull exerted by the piston on the vvalve 7 `to kopen the same..

This gives an instant lift tothe said valve 7 when most needed and opens a lfull and free ou tow through the exhaust pipe. vThespring 12 acts as an auxiliaryto thisopening of said Valve, as hereinbefore described, and 4the said valve is thus drawn outof the way of the exhaust.

While I have herein show n, described and claimed the pump ashaving a dischargeopening or outlet at the top and areturn pipe connecting the same with the main discharge, still I wish to be understood as not limiting my invention to that or any other form or arrangement of such top outlet, excepting in so far as the same is hereinafter.specificallyl operation is substantially the same in bothforms of pump. In Figs. 1 and 2 the piston is shown as having a weight fixed to the back thereof so that the Weight will vhelp to force a speedy discharge of the pump and thereby facilitate the operations of the pump.

Inasmuch as the piston or plunger and the float in my invention both serve the same IOO IIO

general purpose, namely, to operate the valve mechanism, I mean to include either device in the claims which recite a piston or plunger.

The Water inlet passage 6 is described as contracted or reduced in size. As a basis of comparison and to determine what the size of the passage or opening for the water inlet should be, it may be said that it should always be relatively smaller than the discharge passage, and remain constantly open and without valve or other obstruction. The larger outlet is required or the pump could not empty while the inlet is wholly open,and the force of the jet of water assists in the discharge from the pump, serving in a measure to forcibly eject the Water therefrom and causing the water to get out of the pump much sooner than it would by its own gravity. Of course this necessitates that the jet be directly opposite the discharge opening so that the rush of water through the jet will tix the rate of discharge, and carry the dead water outof the pump at this rate rather than leaving it to run out in its own Way. This enables the pump to recover itself quickly, which is a most desirable result. Again, this form of pump is admirably adapted to muddy water, as its construction and method of discharge are especially calculated to keep the pump free from mud or other sedimentary deposits.

The counterbalance for the valve may be a spring or weight-,or equivalent means.

Having thus described my invention, what I claim isl. Ahydraulic air pump havinga movable air-compressing medium subject to the action of water-pressure beneath it, combined with a valveless water inlet, a water outlet arranged in line with the Water inlet and eX- posed to the incoming water through such inlet, a valve for such outlet, and` operating devices for such valve controlled by the movements of the air compressing medium, substantially as described.

2. Ahydraulic air pump havinga movable air-compressin g medium subject to the action of waterpressure beneath it, combined with a valveless water inlet, a water outlet arranged in the pump in line with and directly opposite the discharge end of such inlet to receive more or less of its stream, a valve for such outlet, and operating devices for such valve controlled by the movements of the aircompressing medium, substantially as described.

3. A hydraulic air pump having a movable air-compressing medium subject to the action of water-pressure beneath it, combined with an always open water inlet which is designed to deliver a continuous and uninterrupted stream of water to the pump, a Water outlet arranged, in the pump in line with and directly opposite the discharge end of such inlet to receive more or less of its stream, a valve for'such outlet, and operating devices of the air-compressing medium, substantially as described.

4. A hydraulic air pump having a movable air-compressing medium subject to the action of water-pressure behind it, combined with a valveless water-inlet, a water-outlet arranged in line with the water-inlet and exposed to the incoming water through such. inlet, a valve for such outlet normally seated to close the same, and a valve-actuating rod connected with the air-compressing medium, substantially as described.

5. In a hydraulic air pump, the base having an ejector-like inlet, a discharge opening arranged opposite said inlet and sufliciently close thereto to receive more or less of its incoming stream, a valve for such opening, and a counterbalance to hold said valve open, substantially as described. l

6. The pump herein described having a water and air cylinder with a main discharge, an outlet at the top of such cylinder connected with the main discharge for the escape of leakage, a valve for said outlet, a projection from such valve extending into the cylinder in the path of movement of the piston or plunger whereby the valve may be opened, and such piston or plunger, substantially as described.4

7. A hydraulic air pump having air inlet and outlet passages, a .water inlet provided with a contracted delivery end and constantly open, a water outlet arranged opposite the water inlet and exposed to its stream, a valve for such water outlet normally closing the same, a piston or plunger, and connections gbetween the latter and the valve to open such valve, substantially as described.

Witness my hand to the foregoing specification.

EDWARD I'l. WEATHERHEAD.

Witnesses:

H. T. FISHER, GEORGIA SCHAEFFER.

for such valve controlled by the movements I IOO

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