US603330A

US603330A - hartman

Info

Publication number: US603330A
Authority: US
Publication date: 1898-05-03
Anticipated expiration: 1915-05-03

Description

. {No Model 3 3 Sheets8heet 1.

J. M. HARTMAN.

BLAST FURNACE IRON NOTGH AND APPLIANCE.

3 No. 603,330. k) Patented May 3, 1393. 3E

ll lllll/ lllll FIG. 1.-

s r F I I'NVENTOR:

(No Model.) 3 Shets-Sheet 2.

J. M.HARTMAN. I

BLAST FURNACE IRON NOTGH AND APPLIANCE No. 603,330. 4 Patented May 3, 1898.

(No Model.)

A J. M. HARTMAN. BLAST FURNACE IRON NOTGH AND APPLIANGEH No. 603,330.

3 Sheets-Sheet 3'.

Patented May 3, 1839 8.

" i UNIT D STATES "PATENT FFI "JOHN HAR'TMAN, OF PHILADELPHIA, PENNSYLVANIA.

B LA S T- FURNACE RON-;N OTCH AND APPLIANCE.

SPECIFICATION forming part a Leais Patent No. 603,330, dated May 3, 1898. Application filed June 17, i897. Serial No. 641,158. (No model.)

To aZZ whom it may concern:

Be it known that 1, JOHN M.'HARTMAN, of

- Philadelphia, inthe State "of Pennsylvania,

have invented certain new and useful Improvements'in Blast-Furnace Iron-Notcl1es and Appliances Used in Connection There with, of which thefollowing is a specification, reference being had tothe accompany- 'd w s i In said drawings, Figure 1 represents a-ver- I tical centralsection throughthe iron-notch and adjacent parts, showing the gun or 7 device for applyingthe stopping to the notch in side elevation. FigQ2 is aview of said gun in perspective. I t is a detail view showing the end of said gun with the cap removed.

' a Fig. at is a partial sectionthroughthe butt of said gun. Fig. 5 is a front view ofa portion of the furnace-jacket, showing the opening for the iron notch. Fig. 6 is a horizontal central section through the iron-notch and adjacent parts. Fig. 7 is a partial front view of a the notch-holding devices, and Fig, 8 isa del furnace -wa11,'having an opening A for the i iron-notch and having the usual external jacket. Thi sjacket is constructed in sections a a bo1 ted or secured together and in the regionof the crucible and adjacent to the iron-notch, comprising a series of open troughs a, adapted to contain Water. At the region of the iron notch two adjacent sectionsof the jacket are provided with semicircular flanged openings 6 17, (see Fig. 5,)

which when said sections are secured together by means of bolts 19', passing through the lugs b constitutefa deep circu1a r aperture whose face converges inwardly. On

7 either side of this aperture are lugs b 'b re- I spectiVel-y, which support horizontally-swinging yokes F F, pivoted thereto by vertical pins ff, which yokes carry and secure the 2 retaining devices of the iron-notch.

Theiron-notch itself consists of a hollow plug 13, preferably of plumbago, in the form of a truncated cone whose inner end fits snugly within the opening A of the furnacelwall. The outer end of said plug B fits in a fire-brick lining E,which is supported within a swinging door D. Said door is made of considerable depth, as shown, converging inwardly, and has a deep circumferential flange d surrounding its inner end, so as to form an open channel D for the circulation of water, which is supplied at the top and bot tom by means of the pipes g g, the water being played freely upon the surface and allowed to escape.

The outer face of the flange d fits approximately within the inclined face of the aperture formed by the flange b b, a small interspace for fire-clay or other packing d being afforded. On each side'of the horizontal diameter of the door D the exterior flange d is prolonged swinging back the yoke to which it was atta'ched it will be seen that the door will be freed at that side and maybe swung laterally by means of the other yoke, so that either aright or left hand swing may be obtained to suit the conditions which are most convenient in any given case. v V inwardly-extending strip 6, whose inner end abuts against the iron-notch B to'hold the same rigidly in position, said strip being secured by means of a hooked pin 6, which en gages with a flange 01 around the outer periphery of the door itself.

v At the bottom of the door is a lug G, which forms a support for the trough jH, having a fire-brick bottom It, said trough leading in the usual manner to the casting-point, Where the flow of iron is to be delivered.

The gun M, by means of which the stopping is applied to the iron-notch when desired, will now be described. This gun consists of a hollow tapering cylinder whose front or muzzle m is curved to adapt it to en- At the top of the door isan I w. I

ter the deep aperture of the door and fit within or against the iron-notch B. Near the butt of the gun M are two trunnions O, by means of which the gun is supported upon the links 0, depending from a cross-piece O, which in turn is carried by a pair of pulleys P I and chain P mounted upon the swinging crane Q. A windlass P enables the operator to raise or lower the gun. The butt of the gun is provided with a hinged cap N, pivotally secured at n to the transverse forked yoke n, which is in turn pivoted to the lugs 21*, situated on one side of the butt and is secured by means of the pivoted latch n mounted upon either side of the butt.

On the under side of the gun near the butt is a hollow lateral projection M in whose outer end the guiding-bar M", is seated. The inner portion of said projection is hollow, as indicated at R, (see the sectional view of Fig. 4,) the opening terminating in a forward direction and at the lower side of the guns bore, as shown at r. A lateral pipe S for the admission of steam or other propulsive fluid communicates with the opening R and is conneeted with a suitable source of supply. Upon the upper face of the gun is a rearwardlyprolonged lug m, adapted to engage freely with a V-shaped rod J whose arms extend to the furnace-jacket and are there secured by means of staples j, forming lateral stays, which can thus be quickly engaged with or disengaged from the lug.

The general operation of the device is as follows: Assuming that the furnace has been tapped and the iron discharged to the requisite level through the iron-notch B, when the time arrives for stopping said notch the gun M (which has been charged with clay stopping) is rapidly swung or lowered into position and the muzzle m thereof inserted into or caused to abut against the notch. The curved muzzle of the gun enables it to be insert-ed through the deep door of the notch and has the incidental advantage over a perfectly straight gun that the clay is not liable to settle to such an extent as to allow a passageway above it through which the steam or other propelling fluid can escape. The steam admitted by pipe S is discharged through the orifice 7, directly along the bottom portion of the guns bore, and thus sweeps before it the lowest stratum of the clay,which tends to adhere to the bottom in these guns. Thusa complete and uniform discharge of the contents is obtained. The gun is of sufficient capacity to contain a very large mass of stopping much more than would be required for merely filling the mouth of the iron-notch. Hence when the discharge takes place the stopping is ejected and forced through the aperture of the notch into the interior of the furnace. Usually the wall of the furnace adjacent to the notch is cut or worn away, as indicated at A and the first effect of the surplus discharge is to distribute itself along the inside face of the wall, as indicated at A The surplus material thus distributed not only tends to replace to a certain extent the burnedaway wall, but forms a key, as it were, to lock the stopping in place within the notch and thus prevent it from being forced out by the internal pressure. \Vhen it is desired to reopen the notch for the next tapping, the pricker-bar is driven clear through the clay itself, as indicated at 13, Fig. (5, which thus forms a renewable bushing around the inner face of the opening. \Vhen it becomes necessary to renew the iron-notch B or for other purposes to obtain access to the interior, this may be quickly effected by knocking out one of the keys f or f and swinging back the door D upon the yoke,whose key still remains in position. If desired,an entirely new door can of course be quickly substituted for the old one by removing both keys f and f Thus the parts can be readily manipulated and the notch stopped very quickly, conditions which are of the utmost importance where nearly continuous or very frequent running of the iron is desired. For reasons which are now coming to be understood such method of running is highly advantageous, and the present organization therefore lends itself advantageously to other devices which tend toward this result.

I am aware that it is not new .10 use a mechanical discharging device or gun for the application of clay stopping to a notch; but as hitherto employed by others such devices have been provided with internal pistons for the ejection of the clay. This arrangement not only complicated the parts and rendered the apparatus liable to be impaired by the drying of the clay within the bore, but did not admit of the discharge of a large amount of stopping. Hence it was necessary with these former devices to apply several sueccssive charges in order to obtain a proper amount of stopping in the notch. Not only is the delay incidental to such a method of procedure very undesirable and the risk of forcing out an incomplete stopping a serious disadvantage, but the stopping itself is not, even when complete, satisfactory in its character. The successive layers as they are applied do not coalesce thoroughly, since the surface of the first is usually dried to some extent before the second one can be applied. Consequently the stopping is weak and the advantage of obtaining an internal overflow to form a key to hold the stopping in the notch is not practically obtainable.

Having thus described my invention, I claim, in an iron-furnace, the following combination of parts:

1. The combination, with the furnace-wall and its jacket, said wall containing an opening in the usual region for the iron-notch; of a removable door suspended from said jacket and fitting snugly within said opening, said door being also provided with an opening; and an iron-notch fitting within the opening in the door itself, substantially as set forth.

ICC

2. The combination 'withthe furnacewall andits jacket, said wall containing the .usual opening for the iron notch, of the door D, having a surrounding flange d; water-pipes arranged to deliver water within the channel formed by said flange; and a pivoted support for said door,wher'eby the same may be swung laterally to permit access to the notch-0pening, substantially as set forth. I

- '3. The combination with the furnace-walland its jacket, said wall. containing an opening in the usual regionof the iron-notchaof.

the door 1), fitting snugly in said opening, said door itself containing an opening; the

iron-notch supported in said opening within the door, said door having lateral projections D D the swinging yokes'F, F, pivoted to the furnace-jacket on each side of the notchopening; anddevices, such as keys, f f whereby said door is detachably secured on each side to said yokes,'substantially as set forth.

4. The combination, with the iron-notch, ofthe gun M,',having a curved muzzle adapted to reach said notch; the lateral stays J; the lug, m, adapted to freely engage with said stays; and a swinging support for said gun, whereby the same may be loweredinto position and quickly secured, substantially as set JOHN M. HARTMAN.

'. Witnesses:

G. HERBERT JENKINS, JAMES H.'BELL.