US779623A - Electric pump. - Google Patents

Description

No. 779,623. PATENTED JAN 10, 1905. E. F. EORTER.

ELECTRIC PUMP.

APPLICATION FILED FEB. 9, 1903.

No. 779,623. Patented January 10, 1905.

UNITED STATES PATENT OEEIcE.

EDWIN F. PORTER, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS; TO PORTER AIR COMPRESSOR COMPANY, OF KITTERY, MAINE, A CORPORATION OF MAINE.

ELECTRIC PUMP.

SPECIFICATION forming part of Letters Patent No. 779,623, dated January 10, 1905.

Application filed February 9, 1903. Serial No. 1%,461.

T W710? it y 007106771! is caused to maintain its position against the Be itknown thatI, EDWIN F. PORTER, asubpiston by the tension of the spring P. ject of the King of Great Britain, residing at Q is a feed-pipe controlled by the puppet- Boston, (DOICl1GSt81,) in the county of Suffolk valve R.

5 and State of Massachusetts, haveinvented cer- S is a delivery-pipe, also controlled by the tain new and useful Improvements in Electric valve T. Pumps, of which the following is a specilica- U is an ordinary electric motor whose artion. mature is made fast to the shaft U of the ro- My invention relates to new and useful imtary pump. IO provements for automatically controlling the V V are two springs upon which are pivoperation of a pump, and which has for its oted at V V the toggle-joint V". The center object the provision of a varying supply of of the toggle-joint is pivoted at V to the rod air at a constant pressure, said pressure to be TV, which rod is located at and made fast to maintained automatically by varying the electhe center of the diaphragm WV, which is fas- 5 tric current by which the device is operated. tened to the open end of the chamber VV Another object is to automatically connect which chamber is connected by the pipe IV and disconnect the circuit as the supply of air to the pipe S, leading from the pump at IV". is to be turned on or discontinued. The lever E is also pivoted to the rod at My invention consists of certain novel feathe point E and to the spring V at E The 20 tures hereinafter described, and particularly extension V of the toggle-joint V operates pointed out in the claims. the switch-lever X and in the position shown In the accompanying drawings, which illusin Fig. 1 closes the circuit through the brushes 7o trate aconstruction embodying my invention, X X The air, which comes from the pump Figure 1 is a side elevation of the apparatus K through the pipe and enters the pipe 5 in combination with a rotary pump and air- IV", is vented from the perforations WV, passcleansing apparatus. Fig. 2isacross-section ing through the liquid out through the of the pump, showing its working parts. Fig. pipe IV from the receptacle IV for any de- 7 5 3 is a longitudinal sectional view of part of sired use. the air-conduit, showing the governor-rod and In Fig. l the diaphragm W" is arched by a 30 small fan for its rotation. Fig. tis a view of greater pressure of the air and has caused the the switch and toggle-joint, showing the same toggle V to pass its center, forcing in so doin their upper position. Fig. 5 is a sectional ing the springs V V apart. The return of 80 view hereinafter described. Fig. 6 is a dethesespringscarries thetogglestillfarther up, tail plan view of aspider-support hereinafter bringing the extension V against the lower 35 d ib d, projection of the lever X and causing a quick Like letters of reference refer to like parts break of the circuit at the brushes X X. throughout the several views. The full operation of the device is as fol- A represents a fly-ball governor which oplows: The air being pumped by, we will say erates the lever B, which lever moves over the the medium speed of the motor, it is desired 4 sliding contacts Cof the rheostat D. E is anto get a greater supply without diminishing other lever which in like manner moves over the pressure or increasing the same. \Vhen the sliding contacts F of the rheostat G. the organ is opened up for more air, as in H isa small propeller-wheel which is made organ-blowing, for instance, by pressing a fast to the governor-shaft I, which is stepped greater number of keys the current of air is 45 in the bearing J, as shown in detail in Fig. 3. accelerated momentarily in the pipe XV,

K is a rotary pump which consists of the speeding the fan-wheel H, and thereby the casing L, which includes the eccentric piston governor A, causing the lever B to move M, operatingon the slidingaloutmentN, which downward over the contacts C, cutting out resistance and causing the motor to speed. The reverse motion of the lever B is caused, of course, by using less air, and the motor is slowed. It will be seen that by these parts the motor is made to automatically keep pace with the requirement for air. If the operation of the lever B on the contacts C should cause any slight rise or fall of pressure, this will be corrected by the lever E, which is operated by the varying pressure through the diaphragm N. If the pressure rises a little more, resistance is added to the circuit at this point, just enough to correct any error that may be made in cutting out resistance D, as the resistances D and F are both in series with the motor. If the air is entirely shut ofl viz., if there is none being used while the motor is run ning-the diaphragm WV will rise with the increased pressure suddenly and carrying the toggle V by the center will open the switch by moving the lever X and releasing it from contact with the brushes X X The levers X, E, and B being partly in the electric circuit are properly insulated. It is of course obvious that when the use of air is resumed the pressure will go down to the normal point, allowing the diaphragm to descend, which it does by its tension, drawing down the toggle V and again starting the motor by throwing the switch-lever X.

Referring to Fig. 2, there is shown in'section an oiling device consisting of a trap or reservoir S in communication with the shaft U by the duct S which is connected to the oiling-hole U The operation of this device is as follows: Oil for lubricating the pump is admitted at the intake Q and enters the pump and vents through the pipe S into the trap S. This pipe S being the vent-pipe of the pump will of course contain air or gas under pressure, which pressure will act on the surface of the oil S in the reservoir S and force said oil back into the pump for lubrication through the duct S to be pumped out again as above described, and will thereby circulate through the pump. There are twoducts from the reservoir communicating with both bearings of the pump, only one being shown in the drawings, as the other is a duplicate of it.

Fig. 5 represents a modification of the receptacle VV' and consists of two receptacles w and w, placed in series, communication between the two being through the tube 20 both legs of which extend to the bottom of the receptacles. The feed-pipe w communicates with the top of the receptacle w, and the vent-pipe w" communicates with the top of the receptacle w. The operation of this device is as follows: The fluid for the washing of the air is placed in the receptacle w, and air being forced through the system bubbles up through this fluid and vents through the pipe 10 If, however, the pump with which this device is connected is brought to a standstill and the air in the reservoir supplied by the tube 10 is liable to make back, due to leakage or other cause, the fluid in the receptacle w will be carried over into the receptacle '20, which is of sufficient capacity to contain it. This fluid is thereby prevented from being carried back into the pump by such back action of air, which is the object of this device.

The rotary pump herein shown and de scribed is not claimed in this application, but forms the subject-matter of another application filed March 4:, 1903, Serial No. 146,218.

I do not limit myself to the arrangement and construction shown, as the same may be varied without departing from the spirit of my invention.

Having thus described the nature of my invention and set forth a construction cmbodying the same, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In an apparatus of the character described, a pump, a source of power for operating said pump, and means operated by the flow of the fluid through the pump and by the pressure produced by the pump for varying the action of said pump.

2. In an apparatus of the character described, a pump, a source of power for operating said pump, and means operated by the flow of fluid through the pump to control the motion of the pump.

3. In an apparatus of the character described, a pump, a source of power for operating said pump, means operated by the flow of fluid through the pump to control the motion of the pump, and means operated by the pressure produced by the pump for varying the action of the pump.

4:. In an apparatus of the character described, a pump, an electric circuit for operating said pump, means operated by the flow of fluid through the pump to control the 1110- tion of the pump, and means operated by the pressure produced by the pump for varying the action of the pump, both of said means controlling rheostats in series in the same circuit.

5. In an apparatus of the character described, a pump, a source of power for operating said pump, and a rheostat operated by the flow of fluid through the pump for controlling said pump.

6. In an apparatus of the character de scribed, a pump, a source of power for operating said pump, a controlling-rheostat operated by the flow of fluid through the pump for controlling the motion of said pump.

7. In an apparatus of the character described, a pump, an electric circuit for operating said pump, and a toggle-joint operated by the flow of fluid through the pump to make and break the circuit.

8. In an apparatus of the character de' scribed, a pump, an electric circuit for operating the pump, a toggle-joint operated by the flow of fluid through the pump to make and break the circuit, and a spring to amplify the ating said. pump, means operated by the flow of fluid through the pump for controlling the motion of the pump, and means operated by the pressure produced by the pump for disconnecting said source of power.

In testimony whereof I have signed my name to this specification, in the presence of tWo subscribing Witnesses, this 16th day of January,

EDWVIN F. PORTER. l/Vitnesses:

E. L. HARLOW, A. L. Mmssnn.

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