Electrically-operated steam boiler

Application filed February 9, 1£25. Serial No. 7,935.

tion 11 having end caps 14 and 15 thereon. Arranged centrally within the end cap 14, I show a heating, element 16. . This heating element may be of any ^d®^s*^e^ which can be efficiently heated by the passage of an electric current therethrough.

The heating element 16 is preferably made bv bending a rod or bar to the shape shown _ in Fig· 3 with the lower portion dished or 65 bent downwardly as shown in Fig. 1. me two terminals of the heating element are connected to fastening means such as bolts 20. One of these bolts is preferably of brass and the other of iron and these bolts are each 70 provided with headed portions 21 and nuts 22. Immediately beneath the heating coil. 16 I arrange a mica plate 23 and beneath this plate I arrange an asbestos-plate 24.

Both of the plates as well as the coil are 7 spaced above the shell 14 by /n.insulated block 25. This block is provided with a companion insulating member 26 as shown in Fig 2. The bolts 20 are in circuit through . leads 30 and 31 with a battery or other source a® °^fTlie^tend^tcap²'14 of the boiler is provided with an aperture through which a water supply pipe 37 extends. This supply pipe is provided with a nozzle 38 which is disposed 85 above the heating element 16 and is adapted fo direct water toward the heating element. The pipe 37 communicates with the pipe 40 which in turn, is connected with a pipe 41, the latter being connected to a pump. 4-> and a water supply pipe 43. The arrangement is such that when the pump is operated it will force water through the nozzle 08 causing it to be directed towards the heating .

unit 16 where it will be vaporized. I may 95. here mention that in the action of my invention when the heating element is operating that the water will not strike this element in any quantity, but will be vaporized just before it reaches the heating ele- 10 ment The water will be propelled in the form of a fine mist or spray under high pres^SUIn order that the water will not be accidently supplied to the boiler before the heat- lOo ing unit 16 is at a proper tempera ureι I Show a .thermostat 45 associated with the iron bolt 20. This thermostat is arranged to operate a solenoid 47 ^n the ^proper ternperature is reaqhed in the boiler.. lhe sole noid 47 controls a valve 48 which allows water to enter the boiler.

To dll whom it may. concern: _

Be it known that I, Louis A. Fitzek,a citizen of the United States residing at Los Angeles, in the county of Los Angeles and State of California, have indented a certain new and useful Improvementⁱⁿ ElectricallyOnerated Steam Boilers, of which the following is a full, clear, and exact description, reference being had to the accompanying

Thismvention relates to steam boilers.

The general object of the invention is to provide a steam boiler wherein an electric heating means is arranged to be operated to produce steam in the boiler. . . · .

A further object of the invention , is to provide a steam boiler wherein a hollow drum is provided and wherein an electrically operated heating coil is disposed m the bottom of the drum for the purpose of producⁱⁿlSer object of the invention is to provide a boiler wherein an electrically °P^erated coil is mounted adjacent the bottom of the boiler and wherein means evanorating condensate present m the boiler.

A further object of the invention is to provide a boiler including an outer shell and a electrically operated coil wherein means. is provided ^or discharging water upon the heating coil to vaporize the water.

A further object of the invention is to provide a steam boiler wherein a device operated by steam pressure within the boiler serves to control the flow of water to the ^Atorther object of the invention^ to provide an electrically operated boiler wherein a thermostat which is operatively • associated with the heating element controls ^thOther oMects^of the invention will be apparent from the following description taken in connection with the accompanying drawItuts wherein Fig. 1 is a section partly in elevation showing my boiler; Fig. 2 is> a :sectional detail showing means for the heat hi”· element m the boiler, r ig. o is ‘ top pirn vU of the lower portion oi the to boiler shell showing the heating,

Fie 4 is an end view of the nozzle, and I i_to. 5 is a sectional detail partly in elevation showing the water control valve.

Referring to the drawing by referenc® 55 characters, I have shown a boiler at 10. A indicated, this boiler comprises a Jiody por

1,580,393

In order to control the supply of water to the boiler I show the pipe 40 as provided with/a valve 51. This valve is adapted to be operated by a solenoid coil 52 which is s controlled by a rheostat 53. The flow of electricity through the rheostat is controlled by a lever 54 which is moved by a piston 55, the latter being exposed to the steam pressure within the boiler. ' The arrangement of Ϊ® parts is such that when the' steam pressure increases in the boiler the piston 55 will be driven out against the . action of a spring 56 thus rocking the lever 54 and actuating the . . rheostat to operate the coil 52, and*thus ' change the amount of water fed to the boiler. As the pressure of steam in the boiler decreases due to the diminished supply of water, the spring 56 pushes the piston 55 in_ wardly thus again moving the rheostat 53 . ²⁰ and increasing the supply of'water.

The boiler may be provided with the usual pressure indicator 60 and pop valve 61. ·.'

From the foregoing description it will be ok apparent that I have provided a boiler which is of . extremely simple construction, which may be economically made, and which is highly efficient in use.