US1713593A - And ebwin h - Google Patents

Description

2 Sheets-Sheet l May 211-1929- E. M. BRENNAN ET Ax.

FEEDING DEVICE Filed March 8, 1928 May 21, 1929. E. M. BRENNAN ETAL FEEDING DEVICE Filed March 8, 1928 2 Sheets-Sheet 12 to. which are fastened a drum 13 having Patented May 21, 1929.

UNITED STATES PATENT OFFICE.

EDWARD M. BRENNAN, OE SPRINGFIELD, OHIO, AND'ERWIN H. HossEY, OE MINNE- APoLIs, MINNESOTA, AssIGNoRs To THE BAUER BROTHERS COMPANY, OE sPRING- l FIELD, OHIO, A CORPORATION or OHIO.

Appiication :ned March s, 1928. semi No. 260,136.

.This invention relates to feeding devicesA particularly adapted for feeding material, together with a supply of fluid such as water, or water and steam, to apparatus such as attrition mills.

The object ,of the invention is to provide an improved arrangement for introducing water, or water and steam, to the feeding mechanism so that the water, or water and steam, are intimately mixed with the material before being introduced into the mill.

In the accompanying drawings:

Fig. 1 is a plan view of feeding device embodying the improvements.

Fig. 2 isa view partly in side elevation and partly in longitudinal section, the. section being on the line 2-2 of Fig. 1.

Fig. 3 is a vertical section, the section being on the line 3 3 of Fig. 2.

Fig. 4 is a side elevation of one of the nozzles for injecting water or steam, or both.

Referring to the drawings, 1 is a casing Open at the top andbottom and mounted upon a suitable 4hollow pedestal 2. A horizontal longitudinally extending shaft' 3 is mounted in suitable bearings 4 carried in the -outer end of hollow bosses 5 formed integrally with the end walls yof the casing 1, each of these bosses also having a bushing or sleeve 6 of lignum vitae surrounding and cooperating with a spiral groove 7 in the shaft to prevent leakage of the water. Se-I cured to the reduced 'portion of one. end of the shaft is a worm wheel 8 Ineshing with ya worm 9 on one end `of a ltransversely arranged horizontal. shaft l0, the other end of which has a power transmission device, such as 11 to which power is transmitted from any suitable source .tnot shown). Secured to the; shaft 3' are the/hubs of bell-shaped webs 'feed-ing devices such as teeth or projections An adjustable cut-ofi:l plate 15 is secured to the casing 1 to assist in regulating the feed of the material. Arranged in the forward side wall and also in the rear side walls is a nozzle con.

sisting of an elongated hollow7 body 16 which has on its outer side a threadednippl'e 17 to which maybe connected a suitablefsupply line (not shown) forwater, kor `water and steam. The inner side wall of this hollow body is providedwith a series of jet openhollow bodies fit in elongated slots in the walls of the casing and are provided with flanges 19 by which they are bolted to the casing walls.

,The feeding drum is offset or placed. at one side of the longitudinal center of the casingso that the feeding teeth or projections 14 closely hug the walls of the casino on the upside but are quite well removed therefrom on the down side to improve the feed action. p

To prevent air binding below the feeding mechanism, the pedestal 2 is provided with air inlets, preferably covered by screens 21, these inlets being formed by enlarging the end walls of the pedestal. To prevent the water iowing with the material from splashing out through the air inlet openings, the walls of the pedestal are so formed as to provide depending` lips 22 which reject downwardly and form inner walls or the air inlet openings so as-to deflect the liquid downwardly at the points ofthe air openings. l

By this arrangement it will be seen that leffective means are furnished for supplying terial before introducing into the mill.

Having thus described our invention, we claim:

1. In a feeding device` of the character described, a casing having an upper inlet opening and a lower discharge opening, a conduit leading from the discharge opening in said casing, feeding mechanism for materialloeated in said casing and means for ejecting fluid into lsaid casing, said conduit being provided with an airl inlet opening formed by extending the entrance thereof above the inner wall to prevent splashing of the fluid therethrough. v

2. In a feeding device of the character described, a casing having inlet and discharge openings for material, 'feeding mechanism therein for said material, an elongated nozfor discharging fluid into said easing, said nozzle being confined in the wall of said casing so as to be removed from the path of the material passing through the casing.

3. In a' feeding mechanism of the characdischarging Huid into. said casing so that ter described, a casing, a rotatable feeding said nozzleiwill be out of the path of ma- 10 device in said casing, said device being arterial passing through the casing.. y ranged to closely hug at least one Wall 'of In testimony whereof, We have hereunto 5 said' casing at one point in the rotation vset our hands this 6th day of March, 1928. thereof, and an elongated nozzle confined EDWARD Ml BRENNAN. in thewall of said casing at that point for ERWIN H. HUSSEY.

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