Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS348932 A
Publication typeGrant
Publication dateSep 7, 1886
Publication numberUS 348932 A, US 348932A, US-A-348932, US348932 A, US348932A
InventorsCharles W. Eugg
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Steam heating apparatus
US 348932 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

(No Model.) 3 Sheets-Sheet 1.



No. 348,9`32. Patented Sept. 7. 1886.

(No Model.) 3 Sheets-Sheet 2 C. W. RUGG.


Patented Sept. 7, 1886.

Link xx z xx m, mi WM m m m'tnesses.

%340% &095%

3 Sheets--Sheet 3.

(No Model.)



No. 348.932. Patented Sept. '7, 1.886.




SPECIEICATION fo'ming part of Letters Patent No. 348.932, dated September '7, 1886.

Serial No. 178.663. (No model.)

To (ZZ whom, it may conccrn;

Be it known that I, CHARLES W; RUGG, of Canbridge, iu the county of Middlesex and State of Massachusetts, have invcnted certain new and useful Improvements in Stean-Heating Apparatus,of which the following is a full, clear, and exact description.

This invention relates to that class of steanr heating apparatus in which separate combustion-chambers or fi re-boxes are enployed, having conmunieation with each other, and each separately connected with the chinney or es- Cape-fine, and each of said 'conuections pro- Vided with adam per, both prcferably connected and arranged to be opened and closed from one operati ng nechanisn, so as to secure the closing of either danper on the opening of the other, and vice versa, and all so that the products of conbustion from either fire-box or chaniber may be caused to pass into and through, and thus made to comminglc with, the products of conbustion in the other firebox and thence to the chinney or flue common to both fire-boxes. Apparatuses of this class are to be found shown and described in various Letters Patent of the United States heretofore issued, among theni, notably, the following: Letters Patent to Henry NVilkins, October 3, 1S60,N0. 30,275; A. J. Bell and J. P. Friend, December 24, 1872, No; 134,?43; l). Argerbright and W. Alleuswo'th,Ja1mary 25, 1875, No. 159,141; R. L. XValker, July 25, 1876 and July 11, 1882, Nos. ]80,178 and 260,8l(), to either or all of which reference is hereby had for a better understanding thereof.

The present inventiou pertai ns,particularl y, to the arrangemcnt ot' the water apparatus, and its conbination with fire-boxes or coubustion chanbers, of a coustruetiou, arrangement, and operation, substantially such as described; and its object is to obtaiu the most efficient results in the heating of water and generation of steam therefron with the least possible e'xpenditurc of fuel, and to secure an active circulation ot` the water to iusure the most perfect combustion, and otherwise to render the apparatus serviceable and useful to the highest degree for the purposes stated.

To this end the invention consists, in substance, in the disposition in, and so as to sur- 1 round, the walls of the upper portion, either one or both, (preferably both,) of such conbustion-chambers or fire-boxes, preferably made of a done shape, and above the fuel or fire-chanber proper thercof, of a coil of pipe having its several coils separated from each other, so that the products of conbustion from the burning fuel. below can freely circulate about theni, and each coil between or at its upper and lower ends connected to a comnon closed drum that is located in another and sep` arate chamber or conpartnent having communication, but by separate passages, each provided with a dauper for opening and closing it, with the upper portion of each ot' said conbustion-chambers and by a common passage with the chinney or ilue, said drum being suitably adapted for the eutrance of water thereto and for the escape of stean therefron, and all substantially as hereinafter described.

In addition to the above,thisiuvention con sists of a closed drum arranged within a closed chanber or conpartnent of suitable construction, which has communication with a chinney or flue, and is adapted for water to be entered into and the steam to escape `froni it, and of a series of conbustion-chambers or fire-boxes, each preferably made of a deme shape, arranged about and each at its upper portion, but by separate passages, each provided with a damper for opening and closing it, in communication with said drum-containing compartnent, and also adapted for cou nunicatiou with each other in pairs, and so that the products of coubustion of either one of the pairs of said soconnuuicati ng conbustion-chambers can pass into and through and 'conmingle with the products of combustion of the other, and vice versa, iu eonbination with a vertical coil of pipc located in the upboth of said conbustion-chambers of each pair and above the fuel or fire chanber proper thereof, and having its several coils separated 'from each other, so that the products of conbustion f rom the burning fuel below can freely circulatc about them, and each of so-located coils between or at its upper and lower ends connected to the said closed drum, all substantially as hereiuafter described.

per and done-shaped portion of either one or In the aceompanying drawings, forming a part of this specification, a steam-generating apparatus of the present improved Construction and combination of parts is illustrated.

Figure lisasection crossing through the eenter of the drum-containing compartment and of a combustion-chamber or fircbox on opposite sides thereof, and an elevation of said drum, and of a coil in each of said fire-boxes, both connected to said drum, and in other of the parts of the apparatus in vertical section or elevation, as the case may be, and as the same fully appears on inspection. Fig. 2 is a section on a horizontal plane of the drum-containing compartment and of its drum, andof four eombustion-ehambers or fire-boxes arranged in regular order around said drum-containing oompartment, and a plan view of the remain der of the apparatus, and in which is located two more combustion-chambers or fire-boxes following and in regular order,with its similar chambers shown in horizontal section, as aforesaid, and in other of the parts of the apparatus in horizontal section or plan view, as the case nay be and as the same fully appears on inspection. Fig. 3 is a vertical section on line 3 3, Fig. 2.

In the drawings, A A B 13 and C 0 represent a series of vertical combustionchambers or fire-boxes arranged in regular order about a common central and vertical compartment or chamber,D, which extends above them. Each combustion-chamber is of a cylindrical form and dome-shaped at its upper end or portion, E, and, again, each is provided with a feed-door, F, for fuel, a pit, G, for ashes, having door H, and a fire-grate, J, between the ash-pit G and 'feeddoor F, and otherwise each is suitably built and constructed for the combustion of -such as coal-and in any of the well-known ways of eonstruction-as, for instance, as to its walls K, doors F and H, fire-grate J, loor M to ash-pit, and the same is true as to the walls of the compartment D, about which the aforesaid several fire-boxes or combustion-ehambers are arranged, and therefore needing` no further description hei-ein, except as the same is necessary for a perfect understanding ofthe features ofthis invention.

N is a vertical cylindrical and closed metal drum located in the compartment D, and standing and supported upon a base, O, resting on the floor P of said compartment. An open space is left around all parts ofthe drum, and the drum at its lower end, by a suitablyattached pipe, l, has communication with a water-supply, and at ils upper end by a suitably-attached pipe, Q, with the apparatus, heating or otherwise, in which the steam generated from the apparatus of this invention, as will hereinafter appear, is to be used.

The water-level of the drum N, as it is shown, is at E, Fig. 1.

S is a Vertical coil of metal pipe located in the upper and dome portion, E, of each of the combustion-chambers or fire-boxes A A B 13 and O C and of a shape vertieally and horizontally eorresponding to and surrounding said dome portion E. The coils of each coil S are separated from each other and i" rom the walls of the dome portion E of the eombustion-chambcr, in which each coil S is placed. Each coil S is above the fire or fuel part proper ot' its combustion-chamber, and which is at T; and, again, the upper and lower coil of each ol' the coils S is connected by horizon tal extensions U and V, respectively, thcreof, with the drum N in the compartment D, and both of such connections, as shown, are below the water-level R oi' said drum; but the u pper connection may be on a level with or above the said water-level. The combustion-chambers at'oresaid have communication with each other in pairs, by means ol' an opening, XV, in the dividing-wall thereof, and these several openings, of which there are three, in the arrangement of said ehambers, as they are at present illustrated, are arranged in the same horizontal plane, and in a plane below the lower end of the coil S, and at or about the 'fuel-level of each combustiorchanber. I

X is a passage leading from the upper end of such combustion-ehamber and entering into the upper end of the compartment D, containing the drum N. Each pipe X has a damper, Y, arranged in the ordinary or in any suitable manner, to be operated from the outside to open and close the passage of its pipe; but, as shown in the drawings, these dampers are adapted in pairs correspondin g to the combustion-chambers, as they are ad apted in pairs 'for communication with each other, as al'oresaid, to be operated from one common operating-rod, Z, joining the two and provided with a handle, D' suitably and Conveniently arranged, and so that in moving said red in one direction the damper connected to it, of one passage, will be opened, and the damper of the other passage closed, and in moviug it in the other and'opposite direction the (lamper which was before opened will be closed, and the other, which was before closed, will be opened.

E is a passage leading 'from the bottom of the compartment D, containing the drum N. This passage is to be connected at F in any suitable manuer to a chimney or escape-fine. (Not shown.)

In an apparatus, such as has been above described, embracing three pairs of combustion and communicating ehambers or fire-boxes, A A B B and C C arranged about and having a communication, each capable of being regulated by a damper, Y, with a common compartment, D, containing a drum, N, having water and steam eon'munication l and Q, and each provided with a coil, S, connected with said drum N, and eompartment D, connected with the chimney or fiue, it is plain that with combustion going on in all of said eombustion-chambers the products of each thereof on their way to the chimney or eseape-flue first IIO circulate within and through their respective combustion-chambers about the eoils thereof, and from one to the other of each pair through their communicatingopening XV, according as the dampers of said so-eonmuuieating chambers are adjusted, and then pass from the coubustiouchamber of each pair which is open to the compartmeut D, containing the drun N, into the upper portion of said compartment D, and thence downward about and around said drum N and out at the passage E in the lower portion of said compartment to the chimney. Under this operation plainly the water within the separate coilsS and the drum N, common to and in communication with then all, necessaril y becomes heated, and, if the several fires are properly run, generated into steam, and which has its escape at the steam-pipe Q, of the drum, to be utilized as intended, causing, as is plain, a cireulation of water from the water-supply connected at P through the drum 'N and eoils S, to take the place of the water so nade into steam, and the whole producing, under a proper operation and manipulation of the apparatus described, and a utilization of the conmunicating pairs of combustiorchambers, in the manner of which combustiouchambcrs so connected are capable of being utilized, as is well known, a most active circulatiou of water through and generation from the water of steam in the eoils S and drum N, and in a most effective and economical mauner as to the amount of fuel required, and other respects.

Results similar to those above stated, but varying, of course, in dcgree,-will be seeured by either a reduction 'from orincreasein the number of pairs of combustiouehanbers con structed and arranged and provided and combined, as has been described, for the three pairs A A B B C O of such chambers' Again, by giving the upper portion of each combuslion-chamber a deme shape, and arranging therein and adapting thereto a coil of water-circulating pipe, as has been described, plainly the efficiency of the apparatns is in creased, for the reason that the heat and products of combustion are the better coneentrated about and around the separate coils of each coil S of pipe; but the dome may be dispeuscd with, and still secure good and effective results under the combination and ar- 'rangementof combustion-chambers in pairs communicating with each other, and with a comnon compartment having a water-drum connected with a coil, S, ot' water-pipe arranged in either or both of said chambers and otherwise, all as has been described. More or less eoils of pipe may be arranged in each combustiorchamber, all, however, connected with the common drum N either directly or through each other.

In my patent of August 19, 1884, No. 303,(367, I have shown a grate and steam-heating devices consisting of two eoils with an annular water-heatingchamber between them,

all arranged in a co'bustion-chamber and communieating with a reservoir in a separate chamber, through which the products oi'com bustion are carried, I claim in this application nothing shown and described in said Letters Patent.

My present invention differs from the construction shown in my above-named patent in conprising one or more pairs of intercommunicating `combustion-chambers communicating with a central compartment, which incloses a drum, only one coil being arranged in each combustion-chamber, and said eoils being in communication at both ends with the drum in the central conpartment.

In my former patent an intermediate chamber islocated between the combustion-chamber and drum-chamber, and this intermediate cham'ber I have dispensed with by my present invention. I have also provided separate passages through which the intercomnmnicating combnstionehambers can communicate direct with the drumcompartment or be shut off therefrom by means of dampers connected in pairs so arranged that when one is opened the other will be closed. This arrangemeut of directly intercommunicating combustionchambers, each of which also communicates by a separate passage with the d rurconpart ment, said passages being provided with dampers Operating as described, and each combustion-ehamber containing a single coil communicating at both ends with the central drum, enables the apparatus to be more readily controlled and efi`ects the most advantageous results in attaining a perfect combustion and inereased production of heat.

Having thus described myinvention, what I claim, and desire to secure by Letters Patent, 1s-

1. Iu combination, a pair of combustionclanbers, such as A A, connnunieating with each other, and a coil or eoils, S, of waterpipe, a conpartment, D, having a drum, N, with water and steam connections, and connected to said coil or coils, separate passages X, each having a damper, Y, and connecting said conbustion-clambers with said compartment D, substant-ially as described, for the purpose specified.

2. In combination, a pair of combustionchambers, such as A A communicating with each other, and each of dome shape in its upper portion, a coil or coi1s,S, of waterpipe arranged in the deme of said chambers, a compartmeut, D, having a drum, N, with water and steam connections and connected to said coil or eoils, and separate passages X, each having a damper, Y, and conuectiug said combustion-chambers with said compartment D, substantially as described, for the purpose specified. e

3. In combination, a series of pairs of com bustion-chambers, such as A A'-', the members ofeach pair communicating with eachother and provided with a coil or eoils, S, of water-pipe,



a eonprbment, D, having :1 drum, N, With In testinony whereof I have hereunto set; my water and steam connections and connected hand in the presence of two snbseribing wtto said eoil or eoils, and separate passages X, nesses.

each having a damper, Y, and conneetng said CHARLES W. RUGG. 5 eombustion-chunbers with said eompartmenb itnessesz D, substantially as described, for the purpose ALBERT XV. BROWN,

specified. XVM. S. BELLOWS.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2641233 *Feb 19, 1947Jun 9, 1953Foster Wheeler CorpVapor generator
US3200793 *Dec 17, 1962Aug 17, 1965Cleaver Brooks CoMulti-cell heating unit
US3219017 *Aug 27, 1962Nov 23, 1965Neil H ThybaultWater heater having multiple heating coils arranged in parallel flow paths
US4479458 *Oct 3, 1983Oct 30, 1984Foster Wheeler Energy CorporationHexagonal pressurized fluidized bed reactor
US4955190 *Nov 14, 1989Sep 11, 1990Foster Wheeler Development CorporationMethod for driving a gas turbine utilizing a hexagonal pressurized fluidized bed reactor
US7934505Apr 24, 2008May 3, 2011Garren Mary LEndoscopic bite block
EP2867592A4 *May 13, 2013Mar 30, 2016Aerco Int IncWater heating apparatus with parallel heat exchangers
Cooperative ClassificationF22B3/04