US1494875A - Automatic pump - Google Patents

Description

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EDWARD YEOHANSQF CHICAGO, ILLINOIS, ASSIGNOR TO YEOMANS BROTHERS (20M-` Pm, OF CHICAGO, ILLINOIS, A COBPORATION 0F DELAWARE.

Aurora/amc PUMP.

.eppucaaen mea september 192s. Serna m. 681,730.

To all 'whom t may conccm.'

Be it known that I, EDWARD YnoMANs, a citizen of the United States, and a resident of Chicago, county of Cook, 'and State of Illinois, have invented certain new and useful Improvements in Automatic Pumps, of which the following is a specification.

The invention relates to pumps and more particularly to sewage pumps which are automatically thrown into and out of operation, and seeks to provide improved means which are automatically thrown into andot of operation with the pump for supplying lubricant when the pump is actuated. 'The -invention consists in features of improve ment hereinafter set forth, illustrated in a preferred form in the accompanying drawing, and more particularly pointed out in the appended claims. y

Figure '1 is an elevation of a system embodying the present invention. Figs. 2 and 3 are detail views of parts of the apparatus.

The particular system illustrated Ais adapted for ejecting liquid sewage? from a receptacle or well 1 in which it collects. A centrifugal pump 2 having a vertical axis is arranged adjacent the lower end of the receptacle or well 1 and preferabl in the pit 3. The pump is shown mounte upon a suitable base 4 and its suction or intake pipe 5 communicates with the bottom of there-.-

ceptacle or well 1. When the pump is in operation liquid is drawn from the receptacle 1 and is forced through an upleading discharge pipe 6. A vertical pump shaft is mounted in suitable bearings 8 and its upper end is connected to the rotor of an electric motor 9 mounted at Vthe upper end of the pit.

A series of lpi 10 extendin downwardly into the p1t supply oil to t e shaft bearings and also, ifv desired, to the bearings of the centrifugal pump. These pipes are connected at their upper ends to a common supply pipe 11 which leads from a tank or oil reservoir 12, a valve 13 'being provided the pipe 11 for establishing or cutting ofi' communication between the tank 12 and the individual supply pipes 10.

The valve 13 is operated by an electromagnet or, preferably, by a solenoid 14 arranged immediatel above the valve. Prefera'bly, as shown, t e stem 15 of the valve is connected at its upper end to the lower end of a U-shaped member or yoke 16, and a closed by means of a float switch 21.

vcuit of the motor 9.

ductors 32 is connected parallel to t pin l17 extends through vertical. slots 18 in the sides of the yoke and through the lower end of an extension 19 onthe solenoid core 20. When the solenoid is deenergized, the weightofits core is s`uiiicient to close the valve 13. When the magnet is'cnergized, it opens the valve. The lost-motion connection between the valve stem and solenoid core permits the initial movement of the latter in opening and closing the -valve before the valve itself is shifted.

The circuits of the electric motor 9 and the electro-magnet or solenoid 14 are automatically and simultaneously opened arIid the form shown, this switch is pivoted and co-operates with a ixed contact 22, the switch being held in.either open or closed position by an' ovev-the-center spring 23. A float 24 within the receptacle or well 1 is preferably arranged within a pipe 25 and has an upwardly extending rod 26. The latter at its upper end is provided with adjustable buttons 27 which, at the upper .and lower limits of the level of the liquid in the well,are arranged to engage and close and open the switch 21.

In addition to closing and opening the circuits of the electro-magnet 14, the switch 21 may also directly ofn and close the cirreferably, however, the switch controls the motor circuit through the 'medium of an electro-magnet switch comprising stationary contacts 28 and 29 and a movable contact 30 operated by a solenoid magnet 31. One of the sup ly con- Ihe solenoid magnets 14 and 31 and to one of the terminals of the motor. The other terminals of the magnets are connected to the movable switch member 21 and the other terminal of the motor to the lstationary conv tact 28. Thev other supply conductor 33 is4 vconnectedto thel switch contacts 22 and 29.

When liquid in the receptacle 1 reaches '100 the hi-gh'level, the oat switch 21 is closed, thereby starting the motor 9 4and pump 2 to discharge llquid through the pipe 6, and

also opening the valve 13 to supply lubricant to the .pump

shaft bearings. yAt the low level the switch is opened, stopping the In addition e 11, the oil suply provided vwith motor and closing the valve. to theQ common supply pi ply p1 es 10 are prefera indivi, ual valves 34. Each valve casing, as y shown inFig. 3, has a needle valve which is spring-pressed towards its sea-t but is normally held open by means of a cam lever 36 which co-o crates with a collar 37 adjustabl threa ed to theupper' portion of the va ve casing. By adjusting the collar- 37 'the extent or the opening of the needle valve can be regulated to deliver the desired amount of oil and by means of the cam lever the valve can be opened and closed. Preferably, as shown, these valves are provided with sight openings 38.

Obviously, changes may be made in the details set forth without departure from the essentials of the invention as defined in the claims.

I claim as my invention:

1. The combination of a pump, an electric motor connected to the pump shaft, an electrically operated valve controlling the flow of lubricantl to the pump shaft bearings, a loatsactuated switch and means controlled thereby for automatically starting and stopping the motor and opening andclosing said valve, substantially as described.

2. The combination with an electric mo'- tor, of a pump operated thereby, a valve controlling the flow. f lubricant to the pump Shaft bearings, an electro-magnet for opening and closing said valve, and a floatactuated switch for automatically closing and opening the circuits of said motor and said magnet, substantially as described.'

3. The combination with a receptacle, of a pump for withdrawing liquid from said receptacle, an electric motor connected to the pump shaft, avalve controlling the flow of lubricant to the pum shaft bearings, a

solenoid for opening an closing said valve, a float 1n said receptacle and means controlled by said float for automatically closing and opening the circuits of said motor i of said shaft, a series of pipes for supplying f lubricant to the pump shaft bearings, a valve controlling the supply of lubricant to said pipes, an electro-magnet for opening and closing said valves land a float-actuated switchA controlled by the liquid in said receptacle for automatically closing and opening the circuits of said motor and said magnet', substantially as described.l

5. The combination of a centrifugal pump having a vertical shaft, an electric motor connected to the upper end of said shaft, a series of pipes having individual controlling valves for supplying lubricant to the pump shaft bearings, acommon valve controlling the supply of lubricant to said individual valves, a solenoid for opening Iand closing said common valve, and means for automatically opening and closing the circuits of said motor and said solenoid, substantially as described.

6. rlhe combination with an electric motor, of a pump operated thereby, a valve for supplying lubricant to the pump, a lsolenoid provided with a core having a lost-motion connection with said valve for opening and closing the same, and means for automatically opening and closing the circuits of said motor and said magnet, substantially as described.

EDWARD YEOMANS.

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