US983981A

US983981A - Apparatus for annealing.

Info

Publication number: US983981A
Application number: US54006110A
Authority: US
Inventors: Fred H Daniels
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-01-25
Filing date: 1910-01-25
Publication date: 1911-02-14
Anticipated expiration: 1928-02-14

Description

P. H. DANIELS.

APPARATUS FOR ANNEALING.

APPLICATION FILED JAN.25, 1910.

Patented Feb. 14, 1911.

4 SHBETB-SHEET 14 r/MW??? .wnuc'sses F. H. DANIELS. APPARATUS FOR ANNEALING.

I APPLICATION FILED JAN. 25, 1910. 983,981 Patented Feb. 14, 1911.

4 SHEETSSHBET 2.

F. H. DANIELS. APPARATUS FOR ANNEALING.

APPLICATION FILED JAILZE, 1910. 983,981, Patented Feb.14,1911.

4 SHEETSSHEET 3.

WITNSES INVENTOR 1. SHEETS-SHEET 4.

I NViNTOR mm Patented Feb. 14. 1911 T L PJHWJ P. H. DANIELS.

APPARATUS FOR ANNEALING.

APPLICATION FILED 71111.25, 1910.

gnnuuunu APPARATUS FOR ANNEALIIIG.

acconunanyinp, drawings, forming a part of this specification.

Figure 1 is-a longitudinal sectional elevation on the line I- l of Fig.2, showing an 1 annealing furnace constructed and arranged.

in accordance with my invention. Fig. 2 is a sectional plan of the bottom half of the section being taken on the line ll-{lhof Fig. 1, the top half of the section being taken on the line II -II. Fig. l is a lon gitudinal sectional side elevation showing in vertical section the heating chambers forming the furnace. Fig. 2 is a sectional plan showing the heating chambers in horizontal section. Fig. 3 is a sectional. end elevation of the apparatus on the line IIIHI of Fig. 1. Fig. 4c is a similar sectional end elevation through the heating chamber of the furnace on the line IV-IV of Fig. 1. Fig. 5 is a sectional end elevation through the combustion chamber of the annealing furnace, on the irregular line V-V of Fig. 1. Fig. 6 is a sectional end elevation showing the gas inletopcning leading from the. gas lines into the pot cooling chamber of the annealing furnace, this section being taken on the line VI VI of Fig. 1. 7 is a longitudinal sectional elevation showing a ,lnodificd form of furnace and Fig. 8 is a plan view of the same.

My invention relates to the annealing of various materials in pots, and more part-low larly relates to annealing rods "or wire in such annealing pots.

The object of the invention is to provide a pot. annealing furnace of improved construction having novel means for heating and cooling the pots and for heating the gases burned in the furnace in the annealing operations.

Heretofore in annealing in pot annealing furnaces, the materials being annealed re main in the furnace only for a suflicient length of time to-be heated, the pots containingthe hotmaterials being removed while in a heated condition from the furnace and afterward allowed to cool, or he pot with its contents allowed to remai in the UNITED s'ra'rns PA ENT OFFICE.

FRED H. DANIELS, 0F WORCESTER, MASSACHUSETTS.

. improved apparatus.

Specification of Letters Pateiit. Patented Feb, .14, 1911 Application filed January 25, 1910. Serial No; 540,061.

furnace, until the furnace pot and contents had become cool.

In the use of the improved apparatus shown and described, the annealing pots which contain the materials which are to be annealed, are introduced into the heating chamber of the furnace, and are caused to gradually move through the furnace, pass mg successively through. the heating: chairs her into the combustion chamber forming the furnace and through the corn hnstion chamber into and through the gas heating chamber also forming part of my in this way the pots and their contentsare heated during; their passage through the heating and combos Lion caambers, become cooled gradually while. through the ,QZtS heating chanr her, and at the same time the incoming, unburned gases become highly heated by contact with the heated pots in the gas heating chambcnand, when entering the combustion chamber, are in a proper condition for mixing with the air therein, in order to promote combustion and burn, the burned highly heating the pot heating chamber of the furnace while passing therethrough.

In the drawings, referring to Figs. 1 to 6, 2 represents the pot heating compartment or chamber of my improved furnace and 3 the combustion chamber, which is located intermediate of the heating chamber and a heating chamber 4. The combustion chamber 3 is, supplied with air through ports 5 located in the end wall of the coin bastion chamber, as is clearly shown in Figs. 1, 2 and 5. ir is supplied to the ports 5 through fines or pipes 6 which are connected to the outlets on the heaters 7 mounted in the-air hgating chamber 8, which is located below the heating chamber 2 of the furnace.

The air is supplied by means of a suitable blower, through the air pipe 9 and by means of the mushroom valves 14:, or in any other des1red manner, and the products of combustion are caused to travel through and pass from the heating chamber 2, down fine 16 to the furnace stack. 1

wardly through the conneetin flue 15 into the air heating chamber 8 W ere heat of these outgoing burned gases is utilized to heat the air passing through the heate' rs, then passing outwardly through the stack The annealing pets 17, after being filled with the materials to be annealed are placed in front of the inlet opening in the end of the heating chamber 2, these pots resting upon water cooled skid pipes 18 which extend lengthwise through the heating chamher 2, combustion chamber 3 and gas heat-iv nace.

by means of a cover mounted on wheels so ing chamber 4 of the furnace 'As shownin Fig. 1, a pusher 19 is employed to cause the pots-to pass gradually through the furnace by a step by step movement. As a pot is introduced into the heating chamber 2, one is moved out from the door or opening in the opposite end of the furnace in'the gas heating chamber 4.

In the operation of the annealing furnace by my improved method, the annealing pots 17 are successively placed in position in front of the pusher 19. by means of a traveling crane or other suitable-pot ham .furnace" is of considerable length and, While dling device and the piston of' the pusher 19 is caused to actuate so as to move the annealing pets 17 resting on the skid pipes 18 into the furnace. After the furnace becomes filled with the annealing ,pots, when a pot is introduced one is caused to issue from the opposite end of the furnace. The

the pots are passing through the heating chamber Q of this furnace, they and their contents become highly heated by contacting with the burned gases passing through.

the chamber 2 from the combustion chamher 3. The pots are passed through the combustion chamber 3 from the heating chamber 2, and are then caused to slowly move through the gas heating chamber 4. In this chamber 4 the cold, or relatively cold, gases entering through the gas ports are brought into contact with the outer sur-' faces of the highly heated pots and cause these pots and their contents to gradually become cooled in a non-oxidizing atmosphere ing chamber 4:.

during their passa e through the gas heat- The gases, by coming in contact with the surfaces of the heated pots, become highly heated'and, on entering the combustion chamber 3, from the chamber 4, are there mixed with the air passing from the airportsfi and are burned, the resulting products of combustion passing forwardly into the pot heating chamber 2,

Where they contact with and hcat the pots and materials in the pots while. in this chamher, then passing into the air heating cham- 1 her 8 where they are brought into contact with the air heaters 7 and heat the air during its passage through the air heaters 7 in the her end of the furnace.

issuing finally from the ports 5 in the combustion'chamber 3.

In the modification shown in Figs. 7 and 8, the arrangement of the pot heating ch'amber, combustion chamber and gas heating chamber is the same as in the preceding figures, like parts being marked with like numbers with the letter a' applied thereto, and the pots, instead of bein moved int-o and out of the furnace through doors lo-' cated in its end walls, are placed in and are taken from the furnace through suitable openings in the ends of the roof of the fur These openings are normally closed as to be horizontally movable upon the track, as is shown in the drawings.

After the pots have been introduced through the opening in the roof of the furnace shown in Figs. 7 and 8,.the operation is the same as in the preceding figures until they have reached the opposite end of the furnace, when they are removed through the opening in the roof at the coolingcham- The advantages of my invention .will be- 1 apparent to those skilled in the art;

Instead of heating the annealing pots and their contents and then removing the'pots f-romthe' furnace whil'ein a highly heated condition, and afterward allowing-the pots to cool by contact with the atmosphere while without-the furnace, the pots are gradually cooled by. contact with the unburned gases.

passing to the combustion chamber of the furnace and these gases, forming a non-oxidizing. atmosphere,v prevent oxidizat-ion of the pots and very materially increase their life; The gases,.by contacting" withthe highly heated pots-during their -hasf'siige, through the gas heating chamber, ,becomTJi i." highly heated and when leaving the cooling chamber are in; the best possible condition for mixing with the air in the combustion chamber of the furnace, in this-Way avoid- 1 9 ing the necessity for gas regeneratorsrand utilizing the heat from theheated pots to raise the temperature of the gases and at: the sametime -'grachially cool the'pots' and their contents. 11

Modifications in the construction and ar-- f rangement ofthe parts maybemade with- 1 out'departing'from my invention; jllh'e air burned in' the furnace may be. heated'ior'iiht, as is desired. The gas may beheat'd partly, prior to its entrance into the gas ,heating chamber. The means employed for moving the pots throug'hthe furnace may be-var'ied and other changes maybe made partin from my invention.

Iclaim: .1.. Apparatus for annealing comprising annealing pots, a pot heating furnace having a compartment for heating unburned gases and means for pass ng the annealing 9 without dea I her into the gas heating compartment; sub- I stantially described.

3. Apparatus for annealing comprising annealing pots, a pot annealing furnace having a contpartment for heating unburned gases, a compartment forming a combustion chamber, a pot heating compartment-and means arranged to pass the annealing pots from the pot heating compartment through the compartment formin the combustion chamber into thegas heating compartment; substantiallyas described.

4. Apparatus for ani'iealing comprising Pi annealing pots, a pot heating furnace hav ing a con'ipartlnent for heating unburned a compartment forming a combustion chamber, a pot heating compartment, and means for passing the annealing pots successively through the compartments of said urnace; Substantially as described.

5. Apparatus for annealing comprising annealing pots and a pot heating furnace,

said furnace having a compartment for heating unburned gases, a "compartment forming a combustion chamber communicating with the gas heating compartment and a pot heating compartment communlcatmg with,

the compartment forming. the combustion chamber, and means for passing the annealing pots successiwely through the heating compartment, the compartment forming the combustion chamber and the gas heating chamber; substantially as described.

6. Apparatus for annealing comprising annealing pots, a heating. furnace, said furnace having a compartment for heating unburned gases, a compartment forming a combustion chamber and a pot heating compartQ ment, means for successively passing the pots through the compartments of the furnacc, and means for supplying air to the combustion chamber of said furnace; substantially asdescribed.

7. Apparatus for annealing comprising annealing pots, a potheating-furnace having a compartmentv for ligating unburned gases, a compartment formlng a. combustion chamber, a, pot heating compartment, and means for passing the annealing pots suc' cessively through each compartment of the furnace, said furnace having means for supplying air to said combustion chamber and.

chamber, and means for supplying unburned gases to said combustion chamber, said means being arranged to bring the unburned gases into contact with heating pots in the pot cooling chamber and thereby cool the pots; substantially as described.

9. A potannealing furnace having a con1- partment forming a pot heating chamber, a compartment forming a combustion chamber, a compartment forming a cooling chamber, and means for passing the annealing pots through said furnace and through said pot cooling chamber, the combustion chamber having openings thereinto forming air ports, an air heating chamber connected to the air ports and means for conducting burned gases through said air heating chamber to thereby heat air passing through the air heating chamber to said air ports; sub" stantially as described.

10. Apparatus for annealing articles in pots, comprising a chamber, having a pot heating compartment, a compart ent'forming a combustion chamber and d compartment for heating unburned gases,iand means for passing the annealing pots throughsaid compartments forming the furnace; substantially as described,

In testimony whereof, I have hereunto set my hand.

v ,FRED H. DANIELS. Witnesses: v i

Geo. SIEURIN, G. AuMnnn'r.