US1737388A - Electric motor - Google Patents

Description

A. G. REDMOND ELECTRIC MOTOR Nov. 26, 1929.

Filed May 18, 1925 wat Patented Nov. 26, 1929y UNITED STATES PATENT OFFICE ALBERTG. REDMOND, OF FLINT, MICHIGAN, ASSIGNOR TO MARVEL CARB'URETER COM- PANY, OE FLIN T, MICHIGAN, A CORPORATION 0F DELAWARE ELECTRIC MOTOR Application filed May 18, 1925. Serial No. 81,080.

This invention relatesto certain new and useful improvements in fuel feeding systems for motor vehicles and is a companion application of my application filed even dateherewith, the object being to provide a circuit maker and breaker in which a solenoid 1s employed for holding the contacts out of engagement with one another while the d1aphragm of the pump is moving in a direction to discharge the fuel to the carbureter.

Another object of my invention is to provide a novel construction of solenoid and operating means whereby a movable core is moved into and out of the coil of the solenoid by the movement of the diaphragm so as to hold the movable contact out of engagement with the fixed contact and to release the same in order to allow it to be moved by the spring action into engagement with the fixed contact to complete the circuit through the main solenoid for operatinfr the diaphragm.

Other and furt er objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings I have shown a vertical section through a pump used in connection with my improved construction of fuel feeding system in which 1 indicates a diaphragm pump provided with the usual valve chamber 2 in which inlet and outlet valves are arranged controlling the fiow of fuel from the low level tank to the carbureter and in the drawing I have shown a pipe 3 leading from the low level tank and a pipe 4 leading to the carbureter of the internal combustion engine to which my improved construction of fuel feeding system is applied. 'An air chamber `5 is provided for maintaining the fuel passing to the carbureter at constant pressure.

A casing 6 is secured to the diaphragm pump which is constructed substantially the same as shown in my companion application and has a flexible diaphragm 7 to which a fixed core 8 is secured surrounded by coil 9 arranged within the casing 6 and in which is a fixed core 10. The core 9 forming the solenoid is arranged within an electric circuit 11, the source of energy being in the form of a battery 12 and the diaphragm is adapted to Iby the solenoid and be moved in one direction when the circuit is completed through the coil and forced in to a reverse direction by a coil spring 13, the diaphragm on the suction stroke being moved on its discharge stroke by the coil sprin 13.

Arranged wit in the electric circuit 11 is a fixed contact 14 and a movable contact 15 which is carried by a pivoted arm 16 normally held in contact wit-h the fixed contact by coil spring 17, said pivoted arm being mounted on a post 18 and the fixed contact is mounted on a post 19 carried by the casing 6.

Disposed against the end of the casing 6 is a casing 20 in which is mounted a movable core 21 Which has a sliding connection through the head 22 with a rod 23 carried by the diaphragm 7 and the core 8 so that the movable core 21 will be moved back and forth Within a coil 24 forming an auxiliary solenoid which is in electric circuit from the source of supply as clearly shown, said electric circuit being complete at all times so that when the core is Within thecoil, it will attract the arm 16 so as to hold the movable contact out of engagement with the fixed contact.

When the pump is in operation so as to lift fuel from a low level tank to the carbureter of an internal combustion engine, when the circuit is completed through the movable contacts 14 and 157 the diaphragm is moved to the left so as to suck fuel from the low level tank into the chamber of the pump and when the circuit is broken, the spring 21 forces the diaphragm to the right so as to discharge the fuel drawn therein and force it to the charge forming device.

In the drawing I have shown the contacts left open and the springs pushing the diaphragm to the right so as to discharge the fuel therefrom and asthe diaphragm moves, the rod 23 carried thereby slides within the movable core 21 until it reaches the end of the exhaust stroke or approximately so where the movable core is drawn out from the coil 20, which releases the magnetic force which has held the contacts out of engagement with one another so that the movable contact by the action of the spring will be forced intov engagement with the fixed contact which completes the electric circuit through the main solenoid so as to return the piston or diaphragm of the pump in order to produce a suction stroke. This is repeated so long as the fuel is being consume-d by the internal combustion engine and when the pressure in the feed line from the pump to the carburetor the pump.

What I claim is 1. A motor comprising a solenoid, an electric circuit in which said solenoid is arranged, 'a source of current, a circuit maker and breaker. in said electric circuit, a second solenoid arranged in electric circuit having a movable core and a rod having a sliding connection with said movable core for intermittently moving said core into and out of said solenoid for making and breaking said electric circuit.

2. A motor having a reciprocating member, a spring for moving said member in one direction, a solenoid for moving said member in the opposite direction, an electric circuit in which said solenoidis arranged, a circuit maker and breaker in said electric circuit, a second solenoid arranged in electric circuit having a movable core, and a connection between said movable core and said reciprocating member for moving said core into and out of said second solenoid for operating said circuit maker and breaker.

3. A motor having a reciprocating member, a spring for moving said member in one direction, a solenoid for moving said member in the opposite direction, an electric circuit in which said solenoid is arranged, a fixed contact and a movable contact in said electric circuit, means for normally holding said contacts in engagement with one another and a second solenoid having a movable core operatedl by said movable member for holding said movable Contact out of engagement with the fixed contact for breaking the electric circuit.

4. A motor having a reciprocating member, a spring for moving said member in one direction, a solenoid for moving ,said member in the oppositedirection, an electric circuit in which said solenoid is arranged, a source of current, a circuit maker and breaker in said electric circuit, means for normally holding said circuit maker and breaker in closed position, and a second solenoid arranged in electric circuit having a movable (fore operated by said movable member for breaking said first named electric circuit.

5. motor having a reciprocatingl member, a spring for moving said member in one direction, a solenoid for moving said member in the opposite direction, an electric circuit in which said Asolenoid is arranged, a source of current, a second solenoid arranged in electric circuit having a movable core, a rod having a sliding connection with said movable member and means operated by said second solenoid for breaking said circuit.

` 6. A motor having a reciprocating member, a spring for moving said member in one direction, a solenoid for moving said member in the opposite direction, an electric circuit in which said solenoid is arranged, a fixed contact and a movable contact arranged in said circuit, means normally holding said movable contact in engagement with the fixed contact, a second solenoid arranged in electric circuit having a movable core. a rod having a connection with said movable member and a sliding connection with said core for moving said core into and out of said solenoid for intermittently making and breaking said circuit.

7 A motor having a reciprocating member, a spring for moving said member in one direction, a solenoid for moving said member in the opposite direction, an electric circuit in which said solenoid is arranged, a source of current, a second solenoid arranged in electric circuit, a circuit maker and breaker, said second solenoid having a movable core. a rod carried by the movable member of said motor having a sliding connection with said core for intermittently moving said movable core into and out of said second. solenoid for intermittently making and breaking said circuit.

8. A motor having a reciprocating member, a spring for moving said member in one direction, a solenoid for moving said member in the opposite direction, an electric circuit in which said solenoid is arranged, a circuit maker and breaker, said electric circuit comprising a fixed and a movable contact, a spring for moving said movable contact into engagement with said fixed contact and an electric magnet means for moving said movable contact out of engagement with said fixed contact, said electric magnet means being operated by the movement of said movable member.

9. A motor having a reciprocating member, a spring for moving said member in one direction, a solenoid for moving said member in the opposite direction, an electric circuit in Which said solenoid is arranged, said solenoid being adapted to move said movable member-in one direction, a spring for moving said member in a reverse direction, a

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source of current, a circuit maker and breaker in said circuit, a second solenoid arranged in electric circuit with said tiret mentioned solenoid and means operated by said movable member for intermittently making and breaking the electric circuit of the rst mentioned solenoid.

n testimony whereof I hereunto eix my signature.

ALBERT G. REDMOND.

CERTIFICATE 0F CORRECTiON.

Patent No. 1,737,388. Granted November 26, i929, to

ALBERT? G. REDMND.

It is hereby certified that the Stateot incorporation ci the assignee in the above numbered patent was erroneously given as "Delaware", Whereas said State should have been given as "Indiana", as shown by the records et assignments in this office; and that the said Letters Patent shouid be read with this correction therein that the same may conform to the record of the oase in the Patent Dffice.

Signed and sealed this 14th day ot January, A. D. i930.

M. i. Moore,

(Seal) Acting Commissioner of Patents.

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