US26686A - Lester - Google Patents

Description

LESTER & HJOSTBERG. ,Apparatus for Heating and Ventilating Building s.

Pate nted Jany B. 1860- ERQVNH m.

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UNITED 7 Moses w. LEs iR arPaRA'r s FOE finariivc AND vnlv'rrnarlivq Specification, of Letters Pajea m. 26,686, dated January 1,3,1

To all whom it may concern: i

Be it knownfthat we, MosEsNV. LEsTER and MAX HJGRTSBERG, both of the cityuof Chicago, in the county of Cookand State of Illinois, haveinvented a new and useful Improvement in Air-Heating Devices for Buildings; and We do hereby declare the following to be a full, clear, and exact description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, and making a partof this specification, inwhich- Figures 1, and, 2, are vertical sections right angles witheach other, and Figs. 3

and 4, are horizontal sections.

Similar letters of reference indicatecorresponding parts in the several figures. I

Our invention relates solely to anTimprovement in an air heating and ventilating device (for which Chas. B. Sawyer obtained Letters-Patent for an improvement on such device originally patented by John Sawyer) andin which a ventilating chamber, hotair chamber, hot air flue and ventilating flue are arranged and combined in apeculiar manner for effecting a desiredpurpose.

To enable others skilled in the art to construct and fully understand our invention we will proceed to describe our improvement, and substantially set forth the advantages gained thereby over that of Chas. B. Sawyer and John Sawyer.

(C) represents an air heating chamber extending the whole height of the apparatus Within which is placed the fire pot (K) with its dome (P). p i

(L) is the ash pit.

. (B) is the ventilating chamber described by Chas. B. Sawyer.

(A) is the smoke pipe and (D) the hot air pipes leading to the several apartments to be heated.

Above the dome and below the ventilating chamber (B) are the radiating drums (H H) connected by the pipes (G G) through which, and through the pipe (0) the smoke and heat from combustion pass into the smoke flue (A) as indicated by the red archamber (C), their position:relative to raplaced immediately abovethejlhot aircham placed the pipes (I,aI)l;w1open atibothfends thus forming passageshthroughj which l th air immediately surrounding the dome and between the radiating pipes (1G G) may ,1 escape into the upper portion of the hot air y j I diating pipes (GfG) shown in Fig.

Between the outside casings ar th spaces or openings Jthrdhghwhic th heat that i may radiatettthrough the ill'lll casing (Q) is conductedflintothe upper part of hot air chamber (G); blue arrow indicate direction ofcurrents of Lventilati the black arrows: show the i rents of heated air. i i y (M) isthecold air bon eading out f doors andthrough which offresh air is obtained.

By comparing the abovadelscribedflar rangement with thatfl ipatented byllJohnand Chas. BJSawyer its iadvantageswilh be s clearly perceivedfi B-efe 'ng toChasij B Sawyers patent it will be thattheven tilating chamber (H); occu p es the whole} up per portion of the apparatus whereby niuchl heat as well as room is lost,;thepartitionbe}; tween the hot airchainberjfl(F)f and the ven tilating chamber beingsingle much heat radiates through the; sa1nej1in-chamber (G) and is lost by escaping through damper The chamber (H) being alsoithe receptacle; for smoke and heat} fronrcombustion. jand ber (F) becomes very hots and radiates fli heat freely in all directionsllfromitstop sides, which heat is thusjlost to the hot air flues (I, I) which are taken outbelow; H ventilating flues(J)f being introduced kintofyg the cylindrical inclosureor ventilating chain ber (G) above the fire,jtheiractionisinuch injured and sometimes entirelyqdest i (when the furnaceis highly heated) by are rent of hot air forcingfitslwayl up through the flues into therooins, andlthe veryhobject for which the iniprovenient was desi nedis thus perverted. Much heatis also ostAbyI radiation through the walls of the. air heat{ ing chamber (A), (seedraWingXaccompanyj ing Sawyers patent.) Referring againjjto. I the accompanying drawings it ibe I .y foundthat by the arrangementthereinshownl f all these defects are fentirely obviatedQ reducing the size of ventilatingchamber (B) making it only sufficientlylarge to receive the pipe (0) and ventilating flues (F F) and surrounding it by the hot air chamber (C) much is gained in the capacity of the latter, and the heat radiating from chamber (B), instead of being lost is collected in chamber (0).

The tendency of caloric being to rise all the heat created by the furnace accumulates at the top of chamber (C) and by taking from thence the pipes (D D) conducting the heat to the different apartments, the greatest effect is obtained.

The heat which in Sawyers device is lost by radiation through the walls of the air heating chamber is here saved and carried up into the upper part of chamber (C) through the spaces or opening (J J), and the outside of the furnace whilein operation is kept perfectly cool.

The ventilating flues (F F) being introduced into the apparatus far below the fire, no heat can by any possibility be forced through them into the apartments from which they lead, the velocity of the upward current within them is much increased thus securing a more thorough and reliable ventilation.by inclosing them during their passage through the furnace within the outer casings (N N) leaving a space between the casings and the fiues, the heat which would otherwise radiate through into the fiues is saved and carried to the top of chamber (G) by the upward current within the casing (N). In Sawyers device the current of air striking against the flat underside of the lower radiating drum and finding no direct means of escape is retarded in its progress and by remaining'long in contact with the highly heated surface of the dome (P) v becomes desiccated and unfit for use. This is also the case with the air 'inclosed between the upper and lower radiating drums and pipes (G G). By making the openings (I I) through both the drums aneasy and direct passage is established for the air from below which thus retains its purity. The heating power of the furnace is also thereby greatly increased.

We do not claim the ventilating chamber (B) the hot air chamber (C) hot air pipes (D D), &c. for these have been previously used, nor do we claim either of the parts herein described separately; but

Having thus described our invention what we claim as our invention and desire to secure by Letters Patent,is

The arrangement of the ventilating pipes F, extending down to the bottom of the furnace, drum B, and chimney flue A, in combination with a furnace which is constructed with a central fire box K, P, L, radiating drum H, H, G, G, I, I, O, and air circulating and heating chamber extending up beyond the ventilating drum; in the manner and for the purposes herein described.

MOSES W. LESTER. MAX HJORTSBERG.

Witnesses:

LEWIS DODGE, O. B. MAPLEY.

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