US775054A - Electromagnetic valve. - Google Patents

Description

PATENTED NOV. l5, 1904.

I. G. WATERMAN. ELEGTROMAGNBTIG VALVE.

APPLICATION FILED MAB.. 9. 1903. RENEWED DEO. 24. 1903.

2 SHEETS-SHEET 1.

H0 MODEL.

PATENTED Nov. 15, 1904.

' I. G. WATERMAN.

ELBGTROMAGNETIC VALVE.

. A BPLIGATIoN FILED MAB. 9. 190s. RBNBWBD DEG. 24, 1903.I

2 SHEETS-SHEET 2.

4H0 MODEL.

' www@ UNITED STATES Patented November 15, 1904.

PATENT OFFICE.

`ELEOTFOMAGNETIC VALVE.

SPECIFICATION forming part of Letters Patent No. 775,054, datedNovember 15, 1904.

Application filed March 9, 1903. Renewed December 24, 1903. Serial No. 186,507. (No model.)

To @ZZ whom, it may concern:

Be it known that I, ISAAC Gr. WATERMAN, a citizen of the United States, residing at Santa Barbara, in the county of Santa Barbara and State of California, have invented certain new and useful Improvements in Electromagnetic Valves, of which the following is a specication.

My invention relates to electromagnetic valves.

The Ypresent invention is designed as an improvement on the electromagnetic valves set forth in my copending applications, filed June 24:, 1902, Serial No. 113.002, and led June 24, 1902, Serial No. 113,003, and has for its object the provision of improved and novelmeans for locking the valve inopen position when opened by the electromagnetic action and for electromagnetically releasing the valve to permit closing. thereof Awhen desired. In my copending applications aforesaid, it

is necessary, in order to hold the valvevopen, to maintain a current in the coil, for on the cessation of the current the valve closes 'by gravity. The continuance of a current in the coil for'some time causes heating effects which are prejudicial to the coil; and the purpose of the present invention is to provide means for automatically locking or securing the valve after it has been opened by sending a current through vthe coil, thereby obviating the necessity of maintaining a current in the coil, and to make provision for electromagnetically releasing the valve to allow it to seat itself.

To accomplish the foregoing objects, I provide certain improvements and novel combinations, set forth in detail hereinafter and recited in the appended claims.

In the accompanying drawings, Figure 1 is a vertical section showing the valve raised and locked; Fig. 2, a similar view` showing the valve closed; Fig. 3, a side elevation; Fig. 4, a perspective detail of the coil; Fig. 5, a detail ofthe locking-core, spring, and screw.

The valve-casing 1, shell 2 rising therefrom, the magnet 3, and the core or 'armature 4, connected tothe valve 5, are, by preference, of,

substantiallythe same construction as fully shown and described in my copending applicatlons heretofore referred togvbut to insure perfect and quick seating of the valve I prefer to employ a pressure-spring 6 within the shell 2 and bearing on the upper end of the vention I provide an annular groove 7 on the core, which defines a shoulder 8.

Projecting laterally from the lower portion ings, if desired, or by frictional contact only. 'The shell 14 increases the magnetic action of the coil 11, according to lwell-known principles. The wires 16 from thecoil are led out Vcore 4, and for the purposes of the present inthrough suitable openings in the end of the shell 14.

Movablel Within the tube 9`is a core or armature 17, whose end is positioned to project into the groove 7 and engage the shoulder 8 and hold thevalve raised off its seat after the core 1 has been drawn upwardly on sending a current through the coil or magnet 3. To accomplish the projection-of the core 17 for this purpose, I provide a spring 18. interposed between the end of the core 17, and a screw 19, which is threaded into the end of the tube 9. The head of the screw 19 bears on the outer head of the coil and keeps vit on tube 9.

The wires of the coil or magnet 3 can be included in any suitable electric circuit and the Wires of coil 11 in any other suitable electric circuit, and in this connection I have invented an improved switch, forming the subject-'matter of an application filed of even date herewith, which is adapted to iirst send a temporary current'through the coil, and af terward at option to be manipulated to send a current through coil 11 to retract the core 17 and permit the valve to close.

A temporary current of electricity having been sent through coil 3- the corea is attracted and the valve opened, whereupon the core 17 is projected by its spring into engagement IOO with shoulder 8, and though thecurrent in coil 3 has ceased the corell is held up and theV valve is open. Whenever a current of electricity is sent through coil 11, the core 17 is retracted, and the core 4 and valve drop, assisted by the pressure of spring 6. Thus it becomes unnecessary to maintain a current in coilB in order to keep the valve open, and I thereby avoid injurious heating effects.

The present invention is intended for use in any'connection where such a device would be serviceable.l but is particularly designed as a valve for controlling the water-supply to lavatories, bath-tubs, and hot-water radiators, and thesteam-supply to steam-radiators.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an electromagnetic valve, the combinationwith a hollow electromagnet-coil, a core or armature adapted to be drawn into said coil, and a valve operated by said core, of a hollow electromagnet-coil, and a spring-pressed core or armature therein adapted to automatlcally lock the valve in open position.

2. In an electromagnetic valve, the combination with a valve-casing. of a'valve and a slidable magnet-core, a magnet-coil for attracting the core'` al slidable locking-core disposed substantially at rightangles to the magnet-core aforesaid, and adapted to automatically engage the same, and a magnet-coil for retracti ng said locking-core.

3. The combination with an electromagnetvically-opened valve, and a valve-casing, of a tube secured to the val ve-casing, a core movable in the tube, a coil on said tube, and a spring interposed between the end of the tube i and the core, said core being adapted to lock the valve.

v 4. The combination with an electromagnetically-opened valve, and a valve-casing, of a diskV or seat on the valve-casing, a tube secured to the valve-casing, a coil on the tube, a shell over the coil and bearing against the disk or seata core in the tube adapted to 'lock the Valve, a screw in the ond of the tube Land holding the coil on the tube, and a spring interposed between the screw and the core.

In testimony whereof-l have signed my name to this specication in presence of two witnesses. l

ISAAC G. WATERMAN. Witnesses:

E. S. PILLARD, P. M. HAMMOND.

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