US1457557A

US1457557A - Furnace

Info

Publication number: US1457557A
Application number: US448685A
Authority: US
Inventors: Horace E Smythe
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-02-28
Filing date: 1921-02-28
Publication date: 1923-06-05
Anticipated expiration: 1940-06-05

Description

Jun@ 5,1923. 1,457,557

. H. E. SMYTHE Nvsewom WITNESS/ I June 5,v 1923. 1,457,557

y H. Ev. SMYTHE FURNACE;

Filed Feb. 2S 1921 4 sheets-sheet 2 z2 .Z 1i' f a f2 f i; f/ ff r/ 3o O 3l Ffy WITNESS lwvem'om June 5, 19.23.

H. E. sMYTHE FURNACE 4 Sheets-Sheet 5 Filed Feb. 28, 1921 ES I June 5, 1923.

1,457,557 H. E. SMYTHE f FURNACE 4 sheets-sheet 4 Filed Feb. 28, 1921 Patented June 5, 1923.

Tf1-:Nr carica..

nomen E. SMYTHE, or PITTSBURGH, rENlasznvrun.` i

FURNACE.

Y Application med rblruary 2s, 1921i semina' gases.;

To all 'whom/t mil/y concern:

Beit known that I, Homer a citizen-of the United Stat s, residing at Pittsburgh, inthe county of ihlleghen State of Pennsylvania, have invente new and useful improvements in Furnaces, of which the following is a specification.

My invention relates to furnaces and more particularly to metallurgical furnaces where xn oil is used as -a fuel.

The object of this invention is to provide for furnaces of the open hearth or other type readily operated means whereby oil burners vmay be easily withdrawn from, and restored to, their normal positions.v IAnother object is to provide means whereby such burners may be so withdrawn and'restored by the n furnace attendant from a single station, preferably Iat the back of the furnace where the oil and steam or air regulating stand is located. Other ob'ects pertain to the details and their com inations. n

Referring to'the accompanying drawings, Fig. 1 is a vertical section through a portion of one end of an open hearth furnace, showing parts of my invention in side elevation;

. Fig. 2, a vertical cross-section-of Fig. 1 on 'the line II- II; Fig. 3, a horizontal section of Fig. 1 on the line III-111;Fig. 4, a rear view of the furnace, showing Vthe means by which the burners are operated from the back of the furnace; Fig. 5, an enlarged view showing my burner and its supporting means in side elevation, some adjacent parts being in section; Fig. 6, a vertical longitudinal section through one of the burners and 'its supporting means, a part being in section; and Fig. f7 a sectional detail of a fragment of the burner carriage;

On the drawings, 1 designates the hearth of an open-hearth furnace and 2 the combustion chamber at dne end of the furnace, it bein understood that there isa similar combustion chamber vat the end of the furnace opposite that shown. As is usual the com bustion chamber is somewhat above the bottom of the melting chamber 3.- l

4 is an oil-burner comprismgi the burner .head 5 with the axial passage 6 extending from the end thereof. The ends of this pasy sagaare threaded to `receive the burner ipe-g 7 and the oil inlet fitting ceiving end of the burner-head 5, the pas-v 8. At the oi -resa 6 1s contracted' and threaded toward the o er end to receive theoil-fcarrying pipe 9 vn'ievcfhat smaller than the passage and E. Stamm,.-

and'

projecting Va shontdistance from the' burner.

screwed intoan opening in the 'side of the burner-head for the conveyance of steam or a1r or both into the burner-head. The free end of the burner-pipe 7 is held by the cardepression may be opened upwardly as shown. At leach side of the combustion chamber 1s a vertical u'e or passage 14 lead- -ing to the usual or preferred type of regenerator. This feature is common and forms no part of the invention defined by the appended claims. The bracket 16' provided with the upwardly and outwardly inclined sockets 17 is secured to the `furnace or other support above the opening 11. A pair of

inclined rods

18 and 19 have their lower ends secured in the said sockets y the. et screws 20. The outer ends of the ro s are secured by the set screws 21 in openings in the spacer 22. The upper end of the spacer lis connected bv the adjustable lbraces 23 to the furnace.' The lower end of thev spacer 22 supports the sheave 24 with its pivot 25 at right angles to the plane through both

rods

18 and 19.

The carriage 15 .has the sideplates 26 at lopposite x sides of the said rods and supported on the axle 27 of the-wheel 28 lying lbetween the rods and grooved to receive both of them, whereby the wheel is supported by the rod or track 18 and prevented Vfrom lateral and wab'bling movements. The axle 27 supports the pendent bars -2 one at each side of the wheel. They are spaced apart at their lower end b 4the block 30 bolted thereto and carrying t e upwardly and outwardly inclined stud 31. This stud is secured'by the set-screw 32 in an opening- 33 in the tie-block 34havin an opening 35 in whichy the'burner head 5 1s secured by the set-screw 36. The plates 26 carry the cross-piece 37 in whichthe screw 38 is'swiveled, while the threaded end vof the screw works in the nut 39 carried by the bars 29. 10 is a wing or handle for turning thescrew. `By turning the handle 40 the angular relation of the). burner pipe 7 canbe adjusted in :a vertica direction. The carriage 15 is provided wit `head into the burner-pipe. 10,v is a fitting l nected to an oil-inlet `fitting the two

grooved wheels

41 and 42, one running on the upper side of the rod 19 and the other on the lower side thereof to prevent the carriage from rocking on the axle 27 and from lateral movements'.

Each end of the furnace has the same construction as that described and shown, and each end thereof has a burner mounted and operated like that' just described. On Fig. 4 I have shown each side of the furnace with a pair of

rods

18 and 19, a spacer 22, and

a. sheave 24 at each end thereof. Each carriage 15 has attached thereto an operating cable 43, which passes over the adjacent sheave 24 and thence downwardly under the sheaves 44; thence horizontally over the sheave 45 and under the sheave 46 toward the rear of the furnace; and thence upwardly and over the sheave 47 and under the sheave 48 toward the center line of the rear of the furnace. The sheaves 44 to 48 are beneath the furnace structure. From the sheave 48 the cable 43 passes upwardly and over the sheave 49 which is above the iioor at one side of the regulating stand 50 where the furnace attendant is stationed. From the sheave 49 the cable extends downwardly through the two stop-

guides

51 and 52. A handle or stop 53 is attachedptoeach cable between the stop-guides. The handle 53 engages the stop-guide 51 when the carriage 15 is at its lower or inner position and against the stop-guide 52, when the carriage is at its outer position whichis next to the spacer 22. Fig. 4 shows diagrammatically the furnace and the course of the cables 43 with some of the parts associated therewith. A counterweightl is connected to each cable below the" stop-guide 52 to counterbalance the carriage 15 and its load.

54 is an oil-supply pipe at the re'ar of the furnace and has a vertical pipe 55 between the cables at the operators stand 50. The top of the pipe 55 which is within easy reach of the operator is rovided with the horizontal pipe 56 exten ing in opposite directions from the pipe 55. At each end of the pipe 56 is connected the downwardly extending vertical pipe 57, the pipes 57 being respectively connected to lthe horizontal pipes58 which each lead to a flexible pipe 59 con- 8. At 60 is a valve for admitting oil from the pipe 55 to either pipe 56.

Steam or air is admitted to the steam or air inlet fittings 10 by a series of elements paralleling those by which oil is admitted to the fittings 8. The elements for convey ing the steam or air are given the same ref- .erence numeralsas have been used for the.

elements for conveying oil except that prime marks have beenI added to the numerals designating elements conveying the steaml or air.

When rthe furnace isi'n operation," one burner is projecting into the furnace through the opening 11, the

valves

60 and 60 .being turned to admit oil and steam to that burner, while the other burner is held outside the furnace by the counterweight 61 attached to its operating cable 43. Vhen it is desired to reverse the iiow of fuel and gases through vthe furnace and its regenerators, the handle 53 on the cable attached to the idle burner is raised, allowing its supporting carriage 15 to travel down its track and pass its burner tube 7 into the furnace. The

valves

60 and 60 are shifted to cut'oii' the oil and steam from the iirst burner and direct them to the second burner. The first burner is then withdrawn from the furnace by the attendant pulling down on the pro er handle 53, whereupon the first burner ecomes idle.

Heretofore it has been necessary for the attendant at the central regulating l'stand at the rear of the furnace, when he wishes to reverse the furnace, to cut olf the oil and steam, walk to one end of the furnace and pull out the burner 'ust in use, walk to the other end of the rnace and insert the burner therein and then Walk back to the regulating stand before he can turn the oil and steam into the burner. Byr this practice much time is lost as it has to be repeated for each reversal of the furnace which occursl many times a day. By my invention all the operations required for reversal may be accomplished lat one'central place.

I claim:

1. In a reversing furnace, a meltin hearth, a combustion chamber at each en of the chamber, an oil burner at each end of the furnace, a traveling support for each burner for plrojecting it into its adjacent combustion c amber and retracting it therefrom, an operators stand, means at -the stand having o erative connection with eachl support, where y the operator may so project and retract each burner at will, and means for supplying fluid fuel to either burner at will.

2. In a reversing furnace, a, melting hearth, a combustion chamber at each end of the chamber, an oil burner at each end of the furnace, a traveling support for each' burner for rojecting it into its adjacent combustion c amber and retract-ing it therefrom, an operators sta-nd, means at the j stand having o erative connection with each support; where y the operatormay so project and retract each burner at will, and means at the said stand for supplying duid fuel to either burner at 3. In a,- reversing furnace, a meltin hearth, a (':ombuation chamber at each end o thel chamber, an oil burner at each end of the furnace, a carria e supporting .each burner, ay track on whic each carria may travel toward and away from the jacent combustion chamber, an operators stand, means at the stand whereby the operator may cause each carriage so to travel at will, and means at the stand'for supplying luid fuel to either burner at will.

4. In a reversing furnace, a melting hearth, a combustion chamber at each end of the chamber, an oil burner at each end of the furnace, a carriage supporting each, burner, a track on which each carriage may travel toward and away from the adjacent combustion chamber, each track having its outer end higher than theA end nearest the furnace, an operators stand, means at the stand whereby the operator may cause'each carriage to travel at will outwardly on the said track andl to allow each carriage to travel by avity toward the furnace, vand means at tle stand for supplying fluid fuel to either burner at will.

5. ln a reversing furnace, a combustion chamber at each end thereof, a separate oil burner for each .combustion chamber, a traveling support for each burner movable to project its burner into the adjacent combustion chamber and retract it therefrom, an operators lstand at one end of the furnace, a separate operating means attached to each burner support and leading to the said stand, and means below the furnace floor to contain the operating means extending from the vicinity of the burner support to that of the stand.

6. In a reversing furnace a track opposite the combustion chamber thereof and com- 3s prising a pair of spaced outwardly-extending parallel rods, a carriage having travel thereon and comprising a vertical plate at each side of the track, a peripherally grooved wheel supported by the plates and having travel between the bars and having its groove registering with both rods, and means for controlling at will the position of the carriage on the track, and an oil burner supportedl b the carriage and arranged to be projecte into the combustion chamber and retracted therefrom by the .alternate operations of the carriage. 7. In a reversin furnace, a track opposite the combustion c amber thereof and comprising a pair of spaced outwardly-extendlng parallel rods, a carriage having travel thereon and comprising a vertical plate at each side of the track a peripherally grooved wheel supported b the plates and aving travel between the bars and having its groove registering with both rods, means for controlling at will the position of the carriage on the track, an oil burner supported by the carriage and arranged to be projected into the combustion chamber and retracted therefrom by the alternate operations of the carriage, and means for ad'ustin the angular position in a vertical plane.` igned at Pittsburgh, this 18th day of February, 1921.