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Publication numberUS1224117 A
Publication typeGrant
Publication dateApr 24, 1917
Filing dateNov 8, 1916
Priority dateNov 8, 1916
Publication numberUS 1224117 A, US 1224117A, US-A-1224117, US1224117 A, US1224117A
InventorsSamuel D Nesmith
Original AssigneeSamuel D Nesmith
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electric water-heater.
US 1224117 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



1,224, 1 1 7. Patented Apr. 24, 1917.


35 of Fig. 1. l p ,Y is a. diagrammatic v1ew of the arrangement of the conducting wires inmul-y sTATEs PATENT .-orisrcii.. l



Iatente i vApplication` ledNovember 8, 1916. Serial No. 130,158.

To all whom it may concern:

Be it known that I,SAMEL D. NESMITH, 4 a'citizenofthe United` States, residing at n La Jolla, in vthe county of San Diegoand f5 State of California,'h`ave invented new and useful- Improvements in Electric jWater- Heaters, of which the following is a specification.

1o heating apparatus v electricity passing invention .relates to that class of water in which a current of lthrough a suitable re- .fslstant mediumacts to raise the temperature of the Water.

YMy invention .consists in the employment of a lsuitable insulatingI material throu'gh which a series of narrow fiat channels extend, andvwithin which insulating material, 'multiple-connected conductors are embedded in such relation to the water conducting 2o channels that the heat produced by the resistance of the conducting wires will be transmitted successively'to the channels to which the wires are contiguous, Yso as to gradually raise the temperature of the water to the required degree;

4 It also comprises details of construction which will be more fully explained by reference to the accompanying drawings, in

which s Figure 1 isa sectional elevationy through line 1'-1"of Fig. 3. 1 Fig. 2 is a section through the line 2-2 .ofFigLf' l. Fig. -3 is a section through the line` 3-3 Fig.r 4

' tiple.

and to raise th temperaturebf the water by successive steps asitxpasses through 'the l the amount of current ,consumed for the succeeding channels. f In-` the accompanying drawings, A represents' a casing of any suitable material, and i Above and belowl A is an inlet through which water is admrtted from iany suitable ordesired source,`

Apassing mto the first of the 4chambers 5,

'hence through the conducting .channel 3 up lto the similar chamber 5, at the opposite end,and thence passing down through a channel 3,y which connects with the same chamber, thusl passing alternately from top to bottom, as, shown, and advancing through .the diiferent channels to the exit or discharge passage 7.

8 are electrical conductors to which a current of electricity passes and from which' the ,current is successively directed in multiple throughconductors 9 which are embedded in the insulating material and at such a distance -from the water-conducting channels that heat will be transmitted throughthe material to raise the temperature of the Water, while the conductors themselves are thoroughly insulated from each other with no chance for a short circuit.

The operation will then be as follows:

- The water being admitted to iiow through the apparatus `at any desired rate of speed, the current of electricity provided from any suitablev source will pass through the insulated coils and will transmit its heat to the latter.v Thus the heat transmitted from the Water to a certain degree and the water I passing from this channel through the'chanp dnel 5-will enter the second channel 3 where it is again subjected tothe actiony of the electrical current from the conductors which are contiguous to this channel and the temi perature is increased. It then enters` the neXt chamber 5 and passes therefrom to the .'following channel 3,where it is again subjected to the heat of the contiguous conductors, and so on until the temperature is gradually raised to the desired degree.

In this manner I economize the electrical current by causing it to, act successively upon the water in the various-channels and.

` service rendered will be reducedtoA the smallest' degree. v 'i y By this construction y'of @eatery thewires a're` thorough1y.embedded in the insulatingf material 2 and so are protected against contact at any point with the water'traversing -the channels. i 'l I This invention is especially "and particuL larly useful for the rapid heating of Water which is in circulation. I

the first coil will raise the temperature of` Having thus described my invention, what I claimand desire to secure by Letters Patent is- 1; A n 'electric water heater including a casing having a top and a bottom one of which is removable, lsaid top and bottom each having integral inwardly extendingI partitions, a body 'ofinsulating materialhaving a series of fiat water passages molded therein, and electrical wires embedded in said body adjacent the sides of said water passages, said body being insertible'as a unit in said casing and engaged at its top and bottom with the free ends of the parti tions so as to be supported by the partitions y of the bottom.

2. An electric water heater including a easing having an inlet and an outlet, a body of insulating material having flat water channels molded therein and extending therethrough to cause the water to directly contact with said material, means to direct the Water successively through the channels,

yof insulating material having iiat water said body at points between the channels of the latter, said partitions being arranged to direct the water successively through said channels, and electrical wires embedded in said body.

' 5. An electric water heater including a casing having an inlet and an outlet, a body j of insulating material having flat water channels molded therein and extending therethrough to cause the water-to directly contact with said material, said body having its ends spaced from the adjacent walls of the casing so as to form water channels in conjunction therewith, said inlet and outlet I-egistering with the last named ,channels respectively,I said casing having inwardly extending partitions the inner ends ot' which abut the top and bottom sides respectively of said body at points between the channels of the latter, said partitions being arranged to direct the water successively through said channels, and electrical wires molded in said body.

.In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2601616 *Jun 17, 1950Jun 24, 1952Bendix Aviat CorpFluid filtering and metering unit
US4604515 *Oct 16, 1984Aug 5, 1986Cmr Enterprises, Inc.Tankless electric water heater with staged heating element energization
US7616873Apr 8, 1993Nov 10, 2009Seitz David EThermo-plastic heat exchanger
U.S. Classification392/479
Cooperative ClassificationF24H1/102