US1374132A - Continuous heating-furnace - Google Patents

Description

l. S. WORTH.

APPLICATION FILED mmzo, 1919.

Patented Apr. 5, 1921.

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' connmuous HEATING FURNACE.

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I I Z I I I I I I 3 3 I 2 I I I 2 I I 3 M v N WN J. S. WORTH.

CONTINUOUS HEATING FURNACE. APPLICATION FHED MARZO, 1919.

1,874, 1 82;. Patented Apr. 5, 1921.

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CONTINUOUS HEATING-FURNACE.

To all whom it may concern Be it known that I JOHN My invention relates to certain improvements in continuous, furnaces for heating billets, plates, &c. I

, One objectof the invention is to improve the construction of furnaces, of this type by usinga continuous beam, or a series of beams, extending throughthe'furnace and r havin means for cooling the beams.

line 22, Fig. 1; and 1 A urther object of the invention is to provide/means for liftin the beams, said means being entirely outside-of the furnace. The invention also relate to details described hereinafter.

By Jny improved construction a higher heat-can .be attained than in ordinary furnaces of this type; I a

In the accompanying drawings:

'Figure 1 is a longitudinal sectional-view heating furnace on theline Fig. 2 is a'sectional plan view on the 'Fi 3 is a transverse sectional view on p the line 3- -3, Fi

l. Referring to tlie drawing's,.1'is the furnace supported on arches 2, which may form part of aregenerating structure soas 1 to heat the furnace to the properdegree. 2

is is the bed of the furnace having a series of i longitudinal slots 3 therein extending the full length of the furnace; Mounted in each of these slots is a rectangular hollow beam 4, in the present instance, although the ,cross section of the beam may be varied, as de-' sired. The beam is ofjgreater length thanthe furnace and projects from both ends-ofthe furnace structure 1, as clearly shown in Fig. 1. These beams l'carry .on their upper surface fire brick 5, or other eguivalentma terial for protecting the beams. These-fire brick also form a continuation of the fixed uninterrupted hot. surface.

stated above, are hollow and are connected. to circulating pipes-at each end, as at 6 and bottom of the furnace so as to provide an The beams, as

I S. WORTH, a' citizen of the United tates, and a resident- PAT NT OFFICE. I

ro-woa'rn BROS., or i I Specification of Letters Fatent; Patented Apr. 5,1921. Application filed March 20, 1919.. Seria1 N o.283,6$"/ I '7 communicating with a water supply system, or an air supply system, so that the beams can be cooled by the circulation of water or air. In-the present instance, there are four beams in the furnace. and .they'extend beyond each end thereof. I locate on the outside of the furnace at each endliftingv means andT'also provide means at one end of the furnace for reciprocating the beams so that a billet, or. plate, mounted on a beam, or I beams, at one end of-the furnace will be car-.

Tied-into the furnace and intermittently fed through the furnace anddiScharged at the opposite endwll have shown four beams di- Each shaftismdapted to suitable bearings.

On the shafts-are arms '9"carrying rollers 8 flanged, in the present in'stance; 1 Th? rol lers are located under the b ea 1ns','*as-show-n," so that any rotary'motion impartedlo'the shaft will raise. the beams "so that their ;When -a longitudinal movement is imparted to the beam, orbeams, the billet, or plate,

will lie-moved forward and when-the beams recede the billet, or plate, will rest again on the bottom of the furnace in an advanced position.

' upper surfaces will be abovethe bottom of Each shaftllO' has an to which is attached a rod 12 connected to a crosshea'd ofa piston rod adapted'to a cylinder 13, In

order that the shaft 10, opposite its shaft 10, maybeturned simultaneousl'ywith the shaft, 1 provide the shaft 10 with an arm 14:

and the shaft 10 with an arm 15. The two arms are connected by rods 16 located on the outside of'the furnace-, as shown in Fig. 2.

In order to counterbalance the beams to a certain extent, I-secure-to the-shafts 10 and 10 arms 17 having'counterbalance weights 18. The beams are reciprocated by double acting cylinders. 20.

In the present ill-.- stance, .the rod 21 is connected by a link 22 to a' lever. 23 pivoted at the base and slotted at its upper end to receive a pin 24:, which is attached to the two beams H; By this construction, the beams can raised and lowv ingots, or plates, are placed in position, preferably so as to be supported by, at least, two beams 41 when the beams are elevated; The billets areplaced' on the ends of the beams on the outside of the furnace and when motion is imparted to the shafts 10 and 10 the beams and billets are carried into the furnace'and deposited on the bottom thereof and are progressively fed through the,

furnace as the beams are reciprocated. The several billets inside of the" furnace are also moved forward. The first billet is discharged at .the opposite end of the furnace. The beams, which are hollow, are cooled by the circulation of water, or air, and thus the furnace can be brought to a higher heat than where the operating mechanism is located within the furance. Furthermore, there is no liability of the mechanism breaking down, due to the high heat. In case of any trouble,'access can be readily had to the mechanism. V

As each of the beams has its upper surface covered with fire brick, or like material, the entire bottom of the furnace is kept hot and there is no likelihood of the beams warping, or sagging, due to excessive heatand the weight of the material. means may be provided for conveying the material to the beams and carrying thefmaterial away fronr the furnace, depending considerablygupnn the further. treatment of the material. If, for instance,- the blbomfor billet, is to be rolled, then the roller table or .the mill may be'extended so as to receive the bloom, or billet, as it is discharged from y the furnace. While I have shown a'double furnace inwhichlthere are two sets of beams,

independently operated, these beams may be connected so as to operate in unison, if desired, in which case there'w'ill be a single shaft at each end instead of the two shafts shown.- The capacity of the furnace will depend entirely upon' the material to be treated. v

I claim:

r 1. The combination in acontinuous heating furnace, of a furnace structure; a beam Any suitable ried by the arm means for turning the two shafts in unison so as to, raise the beanri; a pivoted lever at one'end of the shaft and connected to the beam; and means for moving. said lever to reciprocate the'beam. so that material placed on the beam will be intermittently fed through the furnace.

2. The combination in a continuous heatof beams extending;longitudinally of the furnace and projecting at each end thereof; a transverse shaft at each end, ofthe furnace; arms secured to the shaft for raising a series of longitudinal slots in the bed thereof; a beam located in each slot and extending beyond each end of the furnace, said beams being arranged in pairs; two trans verse shafts,one beyond each end of the furnace; arms on the two shafts located under the beams; means for'connecting the shafts so that they will operate in unison, said connection belng outs de of the furnace; power mechanism for operating the shafts so as to raise the beams above the bed of thefurnace; a slotted lever engaging a pin on each pair of beams; and a cylinder connected to each lever soas to move the beams in one directo return them when lowered.

4. The combination of a furnace having. a bed, longitudinal slots in the bed; a longitudinal beam in each slot, said beams extend ing furnace, of a furnace structure; a series I @011 when they are in the raised position and ing beyond the ends of the furnace; a transverse shaft beyond each end of thelfurnace and on the outside thereof; an arm on each shaft having rollersarranged to engage the underside of the beam and raise it above the bottom of the bead; a counterbalance mounted onthe shafts and engaging oneend of a beam; and means for reciprocating the lever so that the beam can be raised as it moves in one direction, or can be raised when moved in the opposite direction to reverse the feed of the material traveling through the furnace. I

ln-witness whereof I affix my signature f JOHN s. WORTH. a

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