USRE10374E - Ments - Google Patents

Description

Reissued Aug. 28, A1883.

C. MOORE. Assignor, by mesne assignments, to HYDRO PNEUMATIG PUMP COMPANY.

. AIR PUMP.

UNITED STATES CHARLES MOORE, OF PHILADELPHIA, PA., ASSIGNOR, BY MESNE 'ASSIGN-r PATENT OFFICE.

i MENTS, TO HYDRO PNEUMATIC PUMP COMPANY, OF NEW YORK, N. Y.

AIR-PUMP.

SPECIFICATION forming part of ReissuedvLetters Patent No. 10,374, dated August 28, 1883.

. Original No. 216,211, dated June 3, 1879. Application for reissue filed June 4, 1883.

To all whom it may concern:

Be it known that I, OHAEL'Es MOORE, formerly of the city and State of New York, but now residing at Philadelphia., in the county of Philadelphia and State `of Pennsylvania, have invented certain n ew and useful Improvements in Air-Compressors, of which improvements the following is a specification.

This invention consists in certain novel constructions and combinations of parts in a hydraulic compressor, whereby the action of the main valve, which admits and discharges water to and from the air-compressor, is governed by an auxiliary valve actuated by a iioat.

The invention also consists in various novel constructions and combinations of parts, whereby water is prevented Vfrom being discharged along with the compressed air. Said air may bev more conveniently discharged in various directions;v also, a very perfect action ofthe valve which admits air to the compressingchamber is obtained.

In the accompanying drawings, Figure 1 rep resents a partly sectional side elevation of an apparatus constructed in'accordance with my invention. Fig. 2 is a vertical transverse section on the irregular line a; in Fig. l. Fig.

' 3 is a longitudinal vertical section, in part, on

the irregular line a7 in Fig. 2. Fig. 4 is also a longitudinal vertical section, in part, on the line :v2 :v2 in Fig. 2. Fig. 5 is a horizontal sectionon the line w21/v3 in Fig. l. Fig. 6 is avertical section, in part, on the line w* w* in Fig. 3; and Fig. 7, also a vertical section, in part, on the line x5 af in Fig. 8. Fig. 8 is a horizontal section on the line :c6 x2 in Fig. l.

A close air-compressing tank or chamber, A, is mounted on a bed-plate, B, which latter is provided with a water-inlet, C, and a wateroutlet, D. The water, under any suitable head or pressure, is admitted by the inlet C to the tank A and discharged from the latter through the outlet D by the automatic action of a differential piston-valve, E E', and an auxiliary valve, F, the latter of which is controlled by a lever-float, G, within the tank A. The upvper or larger piston, E, ofthe valve E E is arranged to work freely up and down within an upper covered cylinder, H, with which the inlet C connects by one or more passages, b, below the piston E or between'the latter and the smaller piston E. Said larger piston E is made to fit loosely within the cylinder H,

or, instead thereof, may have one or moresmall perforations through it, to provide for the water which enters the cylinder H by the passage b leaking past or through it to the space above said piston in the cylinder H, the object of which will be hereinafter explained. Thus the piston E is purposely a leaking one; but the smaller piston E,'which is attached by a rod to the former, is a close-fitting one, within a lower and interrupted cylindrical chamber,

'H' H2, which forms a reduced lower continuahaust-outlet D, and so shuts oii' further escapek of water from the tank A and opens communication by the passages b and I with the inlet C for supplying the tank A with water. The water, as it rises in the tank, compresses the air in the upper portion of the latter, as in other hydraulic air-compressors.

The alternate charging of the tank A with water and exhaustion of the latter therefrom by the rising and falling ofl the differential piston-valve E E is controlled by the action of the float G through the intervention of an auxiliary valve, F, with which said iloat is connected. This auxiliary valve does not, as in other hydraulic air-compressors, control the admission of water to or through the lnain valve, which is here represented by the differential piston-valve E E', but controls an' upper exhaust-outlet, d, from said main valve and a lower outlet, e, in communication with thev general exhaust outlet D. The outletpassage e is arranged in the same vertical central plane, or thereabout, as that of the axis of the cylinder H, while the outlet-passage d occupies a position to one side of said axis,

and the auxiliary valve F, which may be a IOO cylindrical one, is constructed to control said passages d and e, respectively, as it is longitudinally moved first in one direction and then in the other.

The action of these parts, so far as the compression of air in the tank A by the alternate rise and fall of water in the tank A is -concerned, is as follows: Vater, under pressure,v

Y "smaller piston E to close the passage or cylindrical continuation H. The auxiliary valve F is then in a position to close the upper outletpassage, (l, from the cylinder H. The larger piston E, being a leaking one, passes inletwater from below it to the space above it in the cylinder H. This causes an equalization of pressure on opposite sides of the piston E and a downward force or pressure of the water on the upper surface of the smaller piston E, which depresses the main valve E E, closes the exhaust by the cylindrical portion yH2 of the chamber H .H2 to the outlet D, and opens the passage I for inlet-water entering by the passage b to escape into and 'charge the tank A, and so compress the air in the tank. As thewater rises in the tank it of courseV lifts the float G, and this, in its turn, by a suitable trip motion lever, f, moves the auxiliary valve F to open the upper outlet-passage, d, of the cylinder H, as shown in Fig. 4.l This allows the water above the largerpiston E in the cylinder H to escape to the outlet D by the passage e, Which latter is never closed by the valve F. The excess of pressure then vbcing on the under side of the larger piston E, the differential piston-valve E E is raised, thereby causing the passage or chambered continuation H to be closed by the smaller piston, E, which shuts off ingress of any further inletwater to the tank, and opens the passage I` to the lowerV chambered continuation, H2, and allows the water in the tank to `escape by the youtlet D. As the water falls in the ltank the float G descends with it, and, by means of the trip-1n otion lever f, ,adj usts the auxiliary valve F to its normal position of closing the upper exhaust-outlet, cl, from the cylinder1 H, after which the action of charging the tank with Water is repeated, as before.

By restricting the auxiliary valve' F to exhausting the water from the upper surface of the piston E to reverse the action of the main valve E E, and by the supply through or past the upper leaking piston, E, of the inlet-water, all foreign matter is excluded from the auxiliary valve to interfere with the action of the latter.

The iioat proper of the lever-float G itis proposed to make of hard rubber, whereby I leakage of the float to interfere with its action is avoided.-

L is a compressed-air chamber, mounted on the tank A. Within a close bonnet, M, erected on said air-chamber L, is a perforated float,

MAA-...

N, which closes when down on a perforated plate, g, in the bottom of said bonnet.

P is a hollow perforated valve, closing up- Ward, and arranged to rest upon the float N. This valve P,when,open, is in communication, through a check-valve, Q,with a delivery duct or nozzle, R, for the compressed air; but when closed by an extreme rising of the float N serves to exclude water accidentally or excesslively introduced within the tank A from passing off by the deliveryduct R. The compressed air passing off bythe duct or nozzle R as the water 'rises in the tank A, is delivered at any required place through a pressure-regf ulator, S, which serves to equalize or regulate the pressure. This pressure-regulator, which is of peculiar construction, is the subject of f Letters Patent ofthe United States No. 284, 051,

groove u, and from thence passes off by the duct or nozzle R in any required direction', according to the circular adjustment of the -ring s of the duct or nozzle R around the annularly-grooved stem t.

T is the valve through which air is admitted to the tank A, for the purpose of keeping up a continuous or repeated action. This valve has a spring or weightedu lever, w, applied to close it,whereby it is kept tighter or more se- IOC cure against leakage than when simply dependent upon the pressure of the air in the tank to close it. The lever w is not positively connected with the valve T, but the latter simply rests on said lever,which is shown provided with al stem, w', free to slide up andl down within said valve. A rod, z, of the main valve E E strikes, as the lattery rises, the weighted lever w, and moves said lever, so as" to relieve it from its support or closing hold of the valve T, but does not directly open the valve T, simply takes load off the latter, and leaves it free to open Whenever the pressure in the chamber acting on the back of the valveT is so far reduced that the ordinary atmospheric pressure on the face or opposite side of said valve will open it. Thus the air-valve T is not necessarily opened every time the rod z of the main valve completes its ascent, but is only relieved of the weight which holds it IIO I claim as my invention and desire to secure by Letters Patentl. The combination, substantially as/ set forth, of an air-compressing chamber, a main valve, which admits and discharges Water to and from said chamber, and an auxiliary valve, which acts to relieve or reduce the internal pressure upon the main valve by opening an outlet from the chamber, these members being combined` for joint operation to enable the eX- vhausting movementof the main valve to be effected by reason of the reduction of pressure in the chamber due to the movement of the auxiliary valve.

2. The4 combination, with a main valve cylinder or chamber, of a main differential pistonvalve having its larger piston constructed or fitted Within said chamber to establish leakage from its one side or face to the opposite side or face thereof, a hydraulic air-compressingL chamber to and from which the water is alternately admitted and Withdrawn by the main valve, and an auxiliary valve actuated by a oat and governing the action of the main valve by controlling the outlet from that side of the larger piston to which Water isfsupplied by leakage, essentially as described.

3. The combination, With the air-compress-y ing chamber of a hydraulic air-compressor, of the float N, the delivery-valve P, closed by 3o the rising of said float, the check-valve Q, and a delivery-duct for the compressed air discharged through the check-valve, substantially as and for the purpose specified.

4. The circularlyladj ustable delivery duct or- 3 5 nozzle R, in` combination with a hollow compressed air-supplying stem or support having an annular distributing-groove, u, in it, around which the duct .R is made capable of motion for varying the direction in the discharge of 4o the compressed air by said duct or nozzle, essentially as described.

5. The combination, with an air-compress ing chamber rof a hydraulic air-compressor, and with a valve for controlling the supply and discharge of water to and from said chamber, of an air-inlet valve to the latter, and a detached Weighted lever or loading device applied-to said air-valve, and arranged for operation independently of it by the water supply and discharge valve, substantially as and for the purposes specified.

CHARLES MOORE.

Witnesses: f f

J. SNOWDEN BELL, GEO. T. KELLY.

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