US1332501A

US1332501A - Heat-treating furnace

Info

Publication number: US1332501A
Application number: US280131A
Authority: US
Inventors: Charles J Kirk
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-03-01
Filing date: 1919-03-01
Publication date: 1920-03-02
Anticipated expiration: 1937-03-02

Description

C. J. KIRK.

HEAT TREATING FURNACE.

APPLICATION FILED MAR. I, 1919.

Patented Mar. 2, 192`.

ILEEI EEB? NNI.

IIIIIIWJI I IIIIII III. -IIII [I+ Il II Jlwu ,Be it known tha .1, om

which the objects `to be heate jected directlyto the hot products of com- .l i n v y 17 and 18 uponwhichthecars `19 and 20 UNITED sTATEs PATENT :QFFICE- z CHARLES J. yman, or NEW cas'rnn,k Pannen-.vanta #l y To all lwhom zt may concern.- J. Kimi, a citizen` of the United States, a resident of New Castle, in the county of Lawrence and State of Pennsylvania, have invented `a new and useful Improvement in Heat-Treating Furnaces; and I do hereby declare the` followin to be a full, clear, and exact description t ereo-f.

My invention' relates' to` a heatftreatiiigjv furnace.y

to that class: of heat treatin are not subbustion, but are sub'ect to the indirect action of the heat, suc as in the burning of pottery and in the annealing of metal. .fA

The object `of my inventionv is to provide A a compact form of furnace of this character in Whlch the objects to be treated may be moved continuously through the furnace on a double line of tracks. Thel cars `on one track entering in' the op osite direction lill from the other, provision ing made for utilizing the heat emanating from the heated cars and the objects on one track for aiding in heating the objects entering the ,furl nace from the opposite end on the other track, thereby conservin the heat and reducing the'time require for treatment as well as the fuel consumed.

To these ends my invention comprises the -novel features hereinafter set forth and claimed.

In the accompanying drawing Figure 1 is a plan view partl in section of my improved furnace; ig. 2 is a longitudinal section, and Fig. 3 is an enlarged crosssection on the line 3 3 Fig. 1.

In the drawing the numeral 2 designates a suitable base or foundation upon which the furnace is erected, said furnace consisting of the side walls 3 and the top or crown 4.

The heating chamber 5' is divided into two compartments by the artition wall 6, which also aids to strengt en and support the roof 4. This artition wall 6 is provided with the openings 7 arran ed at intervals at the top and bottom an preferably staggered with relation to each other.

Suitable combustion chambers 8 and9 are provided atv each side of the furnace for sup lying the heat whether gaseous or solid fue is employed. These furnaces may be top o Specicationof Letters Patent. Mal". 2, 1920. i Application mea luren 1,1919. ysmal no. asuman. l

of any suitableconstruction and'Iihavey only illustrated them in va.diagranimatic', form in Fi.1.j n oinmunieatin'g with the'. combustion chambers 8 andlarethe fines 10 and 11 reslpectively in thesidewallsof the furnace. Ahe ues 10 ,communicate with each other throu h kthe'lfiue 12 which passes over the the furnace chamber 5, and Ithe iiues y11 communicate through a like iiue 13.

,\ yThese fines 10 and 1 1 are non-communicative, being separated `from each other by the wall 14. v Outlet fiuesl andl are provided for the fines 10 and l11 respectively. Y* Within the heating chamber are the tracks travel respectively, said cars being made up in passing throughY the. furnace. ,y The objects `21 to ,be treated are arranged upon said cars yso asto allowthe. heatto circulate in and` around-the same `during their passage through the furnace. f

The ends of the furnace are provided with suitable doors 22. i

In the operation of the furnace the ware mounted on the cars 19 is introduced into the furnace at one end and the ware mounted on the cars 2O is introduced on the opposite track at the other end of the furnace. The heat from the combustion chambers 8 and 9 passes through the flues- 10 and 11 and also by the

flues

12 and 13 to the flues at theopposite side. The cars and the ware as they pass through the heating chamber are heated to a vhigh temperature, getting hotter as they' near the discharge en Accordingly the heat given of by said highly heated cars 'and the objects carried thereon will pass through the openings 7 in the partition 6, and said heat is emplo ed for assisting in the heating of the co d cars which are coming in on the next track in( the next compartment of the heatin chamber. These cold cars being cooler c ill the air and it drops to thebottom openings in partition wall 6, and passes up through the heated cars on the opposite track and being heated thereby ascends and escapes through the upper openings 7, thereby creating a circulation as indicated by the arrows.

In this'manner I make use of the heat given off by the out oin carsl to heat the incomingcars, and t ere y create a saving and a consequent reductlon in the amount of heating chamber, a longitudinal fuel. Furthermore by this construction the length of the furnace may be reduced as the heating is accomplished in a shorter space of time and consequently such a long furnace is not required. It will, of course, be understood that as one car passes out at the discharge end a new car is admitted to the receiving end, so that the process is a continuous one, and it is not necessary to allow the furnace to cooldown for charging and re-charging.

What I claim is: l

1. In a heat-treating furnace having a artition wall having opemngs therein divi ing said chamber into two communicating com artments, heating ues formed in the wal s of said furnace, one set of ues for one section of the furnace and the other set for the other section, said sets of ues being non-communicating,v and means for supplying heat to said iiues.

2. In a heat-treating furnace, having ai heating chamber, a longitudinal artition wall having ognings therein divi 'ng said heating cham r into two communicating compartments, heating flues formed in the side walls of said` furnace, one set of flues for one section of the furnace and a like set of iues for the other section of the furnace, said sets of fiues being non-communieating, cross-over flues connecting said dues, and means for supplying heat to said ues.

4. In a heat-treating furnace,V having aV heatin chamber, a lon ltudinal partition wall lviding said cham er into two compartments, and said partition having openings at its upper and lower portions, where- 'by the heat emanating from the heated bodies introduced at one endof said'lfurnaceinto one compartment rises and passes through said upper openings into the other.

compartment [while the air chilled by the cooler bodies introduced at the other end. of said furnace in said other compartment descends and passes through said lower openings back. into the first named compartment creating a circulation.

In testimony whereof I the said CHARLES J. KIRK have hereunto set my hand.

CHARLES J. KIRK.

Witnesses:

H. L. Femme, O. P. BEE.