US95281A

US95281A - sturtevant

Info

Publication number: US95281A
Authority: US
Publication date: 1869-09-28
Anticipated expiration: 1886-09-28

Description

B. F. STURTBVANT.

Hot-Air Furnace.

No. 95,281. Patented Sept. 28 .1.869.

W {iV ZTE I MPETERS. PHOTO L THOGRAPH To an whom it may concern: v

itinitrd $111M @aiwtdtiflire.

B. F. STURTEVANT, OF JAMAICA PLAINS, MASSACHUSETTS.

Letters Patent No. 95,281, dated September 28, 1869,

HOT-AIR summon.

The Schedule referred to in these Letters Patent making part of the same.

Be it known that I,B. F. STURTEVANT, of Jamaica Plains, in the county of Norfolk, and State of Massa chusetts, have invented an Improvement in Heating;

.and I do hereby declare that the following, taken in connection with the drawings, which accompany and which it was withdrawn, thus keeping up a continuous circulation of the same air, and utilizing many degrees of heat therein which would be lost if the cold outer air was taken to supply the place of that which has lost only a portion of its heat. I

'lhis reheating and continuously circulating the same air, is particularly applicable for drying or seasoning many kinds of material, and also for many manuiacturing operations, though it may 'be used for heating inhabited buildings and apartments where the number of occupants is small compared to the space inhabited, so that the air will not lose ana'ppreciable part of its oxygen.

This invention consists in the process of heating air, forcing the same by power .into a confined space, and then withdrawing by power the same air'irom said space, reheating it, and again forcing the reheated air into the said confined. space, thus using the same air again and again by forcedcirculation, adding heat to it on its passage, which process I carry into efieot by combining with aconfined space, such as a building or an apartment, and with a means for heating air, a

mechanical apparatus that will, on the application of:

power thereunto, operate to set in motion an air-current taken from the building or apartment tobe heated, and pass it through the means for heating, and then when heated, send it again into the space from which it first proceeded, so that the same air, as it falls below any desired temperature in the building or apartment where the heat is utilized, is reheated again and again, economizing the heat contained therein, instead of having to raise outenatmospheric air many degrees before it reaches the initiai temperature which it is desirable to have maintained in the place to be heated.

In the drawings- Figure 1 shows, in sectional elevation, an apparatus.

suited forthe practice of my invention Figure 2 showing the said apparatus in plan.

a represents the confined space, building, or; room to be heated. g y v This roomis connected by suitable pipes with an air-heater, and with a mechanical means for creating,

by application of force, a continuous circulating current of air through said pipes and heater.

The means shown in the drawings for creating the air current is a rotary blower, b, which connects with the room a -by a pipe, 0, through which air is forced '"from the blower into the room, and by a pipe d,

through which air is taken from the room, and by passing through a heater, e, and the-blower, is-again forced into the room, carrying with it an increment of heat. 1

The heater shown is designed to make use of exhaust steam to heat the air as it passes from the room through the blower back to the room again, said heater being made as a casing or drum, in the heads of which tubes are fixed, so thatthe steam passing in at the entrance f, and out at the egress passage g, shall pass around .the tubes, and heat the air moving through them in its circulation from the roomba'ck to it again. v

The pipes entering and leading from the room may belocated as found best adapted to keep up uniformity of temperature therein, the pipe taking air out of the room being placed where the lowest temperature in the room is found, and partial partitions maybe placed in the room to make,'if desired, a tortuous passage for theair in proceeding in the room from its inlet to its outlet. 7

In some cases, as in dry houses and workshops, the air-heating and current-creating apparatus may preferably belocated directly in the space in which air is to be heated and circulated, as thereby the expense of conveying-pipes is avoided. v g

I. claim the process of utilizing heat by a forced and repeated circuitof the heated-air of an apartmen through a heater, substantially as described.

' '13. F. STURTEVANT;

Witnesses:

J. B. GnosBY, FRANCIS GOULD.