US1515954A - Combination electric and coal boiler - Google Patents

Description

Nov. 18, 1924.

C. R. KLINE COMBINATION ELECTRIC AND COAL BOILER Filed Feb. 14, 192s 9555/5/55 2, 5 M .I l I l 35,5

Patented Nov. 18, 1924.

Y UNITED STATE-s PATEN r Ormes.

:mamans n. KLINE, or nEAnINe, PENNsYLvAn-IA.y

COMBINATION ELECTRIC AND COAL BOILER. I

Application led February 14, 1923. Serial No. 818,890;

composed of sections held in assembled posi tion by any suitable means` the interior of said sections being heated by a coal grate, while the water legs or water spaces of the boiler are provided preferably on each side with electrically heated units or elements,v which are constructed and supported, so as to provide for expansion and contraction with respect to the boiler sections in a novel It further consists of a novel construction of a sectional boiler` havin'g the water legs or water spaces provided with electrically heated units. whose outer ends are constructed and insulated in a novel manner, the interior of said sections bein'g provided with a coal grate, whereby either coal or electricity may be employed independently or simultaneously as the heating medium or agent.

It further consists of a novel construction of an electrically heated unit or element and a novel manner of assembling and/supporting the same and its adiuncts with respect to the boiler sections to be heated.

It further consists of a novel manner of supporting theends of the electrically7 heated unit, whereby the requisite expansion and contraction is permitted and leakage of the water from the outer section of the boiler is prevented.

of construction and advantage, all as will be hereinafter set forth and pointed out in the claims. i p

For the purpose of illustrating my invention, I have shown in the accompanying drawings forms thereof whichv are at present preferred by me,since they will give in practice satisfactory yandreliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and It further. consists ofvother novel features to a horizontal or a organizedand that my invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described.

Figure 1 represents a perspective view of asectional electrically heated boiler emb0dying my invention, the front boiler section being ysectioned vertically to show the collocation of the electrically heated units with' respect to thewater spaces or water legs of the boiler.

Figure 2 represents on an a section on line 2-2 Figure Figure 3 represents, the outer end of the Figure 2, showingthe manner of assembling the electrical heated unit and its casing, within the outer boiler section.

Figure 4 represents on an enlarged scale 1. on an enlarged scale, heating unit seenl 1n enlarged scale,-

a vertical` section on line 4-4 Figure 2, f

showing the manner of supporting the inner end ofthe casinfg of the electrical heating element. I

Figure 5 represents a section on line 5 5 Figure 3.

Figure 6 showing the and its adiuncts.

represents a perspective view Figure 7 represents ab sectional view ot'- end of one of the electrically-heated units' the outer end of apheating element p' showing also an insulating covering ldoor therefor. t

Similar numerals of reference indicate corresponding parts.

Referring to the drawings It will be understood that my'invention, in-its broad aspects, is capable of adaptation saine in conjunction with a vertical sectional boiler, composed of a series of vertlcal sections, which are tied together by side rods,

vertical sectional boiler,. and in the present instance I have'shown the is customary. In illustrating the adaptation of my invention to this type of boiler, I have shown a sectional boiler 1 as composed of the front section 2, a rear section 3 andthe intermediate sections 4, the number of which latter may be increased or diminished according to requirements.

i the water communication between the varioussections is eiected by means of the side nipples 6, and the upper series of central nipples 7. Between the Water legs is lo cated the combustion chamber 8' having the grate 9 and the ash pit 10; f

11 designates-ho'rlzontally disposed rods, which hold the various sections in assembled position. In adapting the water holding sections, of the conventional type to my mvention, 'I preferably form on each side u thereof the enlarged water holding chamber 12 in each Water leg, which is effected by bulging out the outer Wall of the section, as indicated at 13, and Within tihis chamber 12 on each side, I locate the heating element or unitv 1li-,which comprises the metal- -lic or other casing or tube 15, having its inner end closed as indicated at 16 and .sup-

upon the V-shaped lug or shelf 17, yvlnch ma be cast upon or secured to the interior o the rear section 3. Within the tube 15, I locate the core 18, which is'made of any suitable material and around this c0re, I Wind one o r more of the resistance coils or electrically heated elements 19. The outer end of the tube is closed by the porcelain or other non-conducting plug 20, which has 4the horizontal channels or passages 21 andv 22 therein, which serve as conduits for the ends of the conductors and merge into the vertical passages 23 and 24', f

respectively, as will be understood from Figure 5. [The plug has a tight or driving fit in the outer end of the pipe or casing 15, .so that -air is excluded from the latter. Above or upon the outer end of 'the horizontal pipe 15, I locate thev pair of vertical insulating pipes 25 in which are located the terminals 26 and 27 of the conductors orA wires which form the heatingv element so that they will be properly insulated and protected. It will be seen that the inner end of the casing 15, by reason of its manner ot support on the V-shapedshel 17, is free to move slightly longitudinally to provide for expansion and contraction, and in order to the casing seen in Figures 2 and 3, wherein the outer provide for expansion at the outer end of 15, I employ thc construct-ion end of the tube 15 is located in a stuiiing box composed ofthe gland 28 and the packmg 29, it being apparent that Wirren said gland 28 is tightened, there will be no leakage of water from the front'section 2 and, at the same. time, there will be provided means for permitting the expansion of the outer end of the tube 15 of the electrically heated element or unit 14.

It will be understood that the conductors 26 and 27 are provided with an electric i switch'cr button or controlling device of any suitable or conventional t pe, so that v heating coil or resistance 19 will at once become highly heated, and by reason of its position Within the water legs or jackets 5 of` the boiler, the heat of the electrical elements Will be instantly applied to the Water in the Water legs and an effective circulation Will be at once created.

It Will thus be seen that by my invention I am enabled to heat a sectional boiler of the conventional type either by electricity or coal or both simultaneously or independently and in case of the scarcity of coal, electricity which is usually available in modern homes, may be employed solelyfas the heatin medium. 1 i

y my novel manner of supporting the i11- ner and outer ends of the electrical heating units or elements,`it is apparent that ample provision is made for expansion or contract'pn of the heating unit or element, and by t e of t e front sectionprov1sion is made for ermitting expansionr outwardly of the heating elements, and, at the same time, prevent- Y ing any leakage of water from the Jfront secs tion.

The entire boiler is preferably provided with a covering of nonconducting material, the portion of the latter on the front section being indicated at 30, Figure 7, and the outer ends of the electrical heating elements are insulated by a door 3l provided with a nonconductin lining 32, which may be hinged and locke in position in an suitable manner, as seen in full lines in igure 7, and in dotted lines in Figure 1i. While I have but one electrical heating element in each Water ieg, it will be apparent that more may be em loyed and they may be located higher or ower in the Water le s, as may be desired.

It will be understoo that the casing 15 containing the heating element is completely immersed in or surrounded by water, as will be understood from Figure 2, and that the electric heating element or unit may be insorted into or removed from the casing according to requirements without disturbing the position of the casing in the boiler, whereby aburnt out unit can be readily removed Without emptying the Water Vout of the'vvhole heating system, including the boilrevision of the stuffing box at the front liti 'casingv 15 is located, -Will b e enough larger than the `outer dimensions of said casing so that-a free circulation of the Water to be of sai heated will be permitted at all times around the heater casin and Within the Water legs.

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

-1. In a device of the character stated, Wa-

ter holding sections, provided with a grate, an electrical heating element positioned in said sections, and comprising a casing, surrounded by Water except at its front end, and

` icontaining a core and a resistance coil, a support on one of said sections for said casing, the outer end of the latter protruding through the front lsection and movably secured therein, anda tightitting'closure for the outer end of said casing.

2. Ina device of the character stated, Water holding sections, provided with a grate, an electrical heating element positioned in said sections, and comprising a casing, surrounded by Water except at its front end, and containing a core and a resistance coil, a support on one of said sections :tor said casing, the outer' end of the latter protruding through the front section and movablysecured therein, and a tight fitting closure for the outer end of said casin in combination with a gland and packing or'the outer end of said casing.

3. In a device of the character stated, Wa-y ter holdingA sections, provided with a grate, an electrical heating element enclosed in a casing immersed in Water, positioned in saidv sections, and comprising a casingclosed at its .inner end, and containing a core and. a resistance coil, an'internalsupport on one of. said sections, receiving the inner end of said casing, a stuing boxin the outer Water holdin v section, through which the outer end casing protrudes, a closure for the outer end of said casin having passages therein for the ends of the resistance coil and pipes on the outer end of said casing composed of insulating material, through which the terminals of said resistance coil pass.v

4. In a device of the character stated, water holding sections, provided with a f grate, an electrical heatingv element posif co I tions, receivin tioned in said sections, and comprising a casing immersed in water, closed at its inner end, and containing a core and a resistance coil, an internal support on one of said secthe inner endA of saidv casox in the outer water holdrou h which the outer end of said casing protru es, a closure for the outer ing, a stutiin end of said casing having passages therein for the ends of. the resistance coil and pipes on the outer end of said casing madeof insulating material, lthrough which the terininals of said resistance coill pass, in combinationwith an insulating door, covering the end of said heating element.

5. In a device of the character stated, a

sectional boiler composed of front and rear and intermediate sections having water legs, joined by laterally disposed nipples, 1n such a manner as to permit the free circulation of Water in and through the chamber so formed, an electric heating element passand intermediate sections having water legs,`

joined by'laterally disposed nipples, in such a manner as to permit the free circulation of Water in and through the chamber so formed, an electric heating element passing through said nipples, and comprisingan outer casing containing a resistance coil, a

.rear section and supA orting the inner end trough shaped shelf n the interior ofsaid of said casing, a stu ng box in said front section through which the front of saidcasingpasses, a closure for the front of said casing and a protecting casing for the terlminals of said coil, in combination with an insulated door for closing the frontend of the electric heatin element.

7. In a device 0%' electric heating element, comprising a metallic tube closed at one end, and having a tight fitting. non-conducting plug at-the other end provided with horizontal and vertical channels, a core in said tube, a resistance coil on said core, the terminals of said coil being vcontained in said channels and upright pipes on said tube made of insulating material through which said terminals pass.'

" 1.8. In apparatus of the character stated,

the character stated, an V liquid, the temperature of which conven- Without said compartment and means for tionally is raised byA combustion, with an preventing leakage of li uid at the place of `electrical heating element removably intropenetration of said heatm element.

duced through a Wall of said compartment CHARL S R. KLINE. 5 and immersed in the liquid contained there- Witnesses: v

in, the terminal orton of 'said heating ele- E. HAYWARD FAIRBANKS,

ment, however, eing located substantially C. D. MGVAY.

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