US367858A - smith - Google Patents

Description

(no new. J.- S. 'SMITH DUST COLLECTOR.

No. 367,858. PatenteahAugx 1887 STATES iPa'reN'r rrrce.

JOHN S. SiiIiIII, OF JACKSON, MICHIGAN, ASSIGNOR TO THE ACME DUST COLLECTOR AND "WHEAT CLEANING COMPANY, OF SAME PLACE.

DUST COLLECTOR.

' SPECIFICATION formingpart of Letters Patent No. 367,858, dated August 9, 1887.

u Application filed Decombcx-Qi, 1885. Serial N'o. IEG 'KZI). (No model.)

To all whom it may concern.-

Be it known that I, JouN S.SM1'rI-I, ofJaekson,in the county ofJackson and State'ofMichigun, have invented a new and useful Improvemcutin Dust-Collectors, of which the following is a specification. y

In the annexed drawings, making part of this specification, Figure 1 is an elevation of the dust-collector; Fig. 2, avertical central longitudinal section. Fig. 3 is a section on the line -A A of Fig. 2. Fig.4isasectioushowing the relative positions of the metallic shells; Fig. 5, a detached section of the perforated shell and traveling apron, the latter being broken away to disclose the former.

The same letters are employed in all theligores in" the designation of identical parts.

A. is the chest, and B the spout th rough which the dust-laden air is driven from the fahs in the mill in a line tangential to the circular chamber in the interior of the chest, and from which, after sweeping around the wall, it escapes through the ccutral'hole, C. Iprefer to h'avesuch an opening on each end of the chest. '5 The mouth of lhe spout is regulated by a slide, B. v j

D D are rotating heads set on the ends of the chest and cast with flanges D I), which are supported and confined by friction whcels E,

o the pivots of which are attached to the chostiu such positions that the edgcsof the 'iiaugcs shall be conlin'ed in grooves in the friciioir wheels, which thus confine the heads and at the same time allow them to rotate withouta shaft.

Cogs or sprockets D are cast on the cylindrical portions of the heads and engage lhe opcir ings in the links of the chains 1Q, which move on the sprocket-wheels 1*",ant carry an endless apron, I), of thin cloth made of wool orother fibrous fabric, whi'chwill allow a portion of the air to pass through its texture, but-will gather the dustborne'with the air. This woven apron is fastened at the edges to the chains F,

and is carried by the rollers 1 to which the sprocket-wheels F are attached.

G is the driving-shaft, and also one of the rollers for the endless apron,having sprockets to carry the chainslfiaud on one end a sprocketwhcel, (i, which carricsthc chain which drives the brush Land on the other a sprocket-wheel,

Gflivhi'ch carries a chain to drive the con veycr M. I v The chains F and wovenaprou turn back from the rollers above and below the spout B, as shown in Fig. 3, and are carried on the sprockets D. on the heads D, which they cause to rotate on-their friction-bearings E.

A stationary sheet-iron shell, H, is fastened to the inner faces of the ends ofthe caseA,and extended from the top of the roller F, above 50 the wind-spout B, to the bottom of the roller Cr, below said wind-spout. The joint between the end of the sheet-iron shell and the upper roller is packed with strips of shceps pelt to prevent'the escape of the dust. Another shell,

I I, similarly attached, extends from the bottom ofjthe roller F above the wind spout B to the top of the roller G below the wind-spout. This shell I is made of zinc finely perforated, as shown in Fig. 5. A partition,B,cxtcnds from thebottom ol'thc wind-spout ii to the end of the perforated shell I at roller G, to prevent the escape of the dust-laden air at that point.

The woven apron D travels along the surface of the perforated shell I on the i nterior thereof, and is held against it by the pressure of the blast, audit is designed to catch the dust car ricd in theai r, and which, being specifically heavier than the air, is thrown outward by contrifugal force, and, striking against the fibrous surface of the woven tissue, will adhere thereto.

A portion of the air will pass through the tissue and enter the chamber K between the shells II and I, and escape therefrom thrlough an opening adjusted by the valve K" in an S5 amount regulated at will by shifting the i alve so as to increase or diminish the ainountof air allowed to pass through the tissue. The dust which may accumulate in the chamber K; may be withdrawn through a doorarrangcd for the purpose, butnot shown.

As the woven apron moves down from roller G it passcsla revoiviug brush, L, which is arranged-to dislodge from the surface or the creeping apron the particles of dust caught upon it in passing through the chamber X. I have shown the brush as arranged to strike against the clean surface of the cloth, acting by percussion and the thrust of the bristles throllgh the pores of the cloth to dislodge the 2'0 by the current of air.

dust adhering to theothcr side. Myownexperiments indicate that this is the best arrange ment; but the position of the brush maybe changed, if preferred, or brushes may be ap plied to both sid s, or whips or other known cquivalentsmay be substituted for thebruslu's The dust thus dislodged from the traveling eloth t'alls into a hopper below and is earried away by the eonveyer W.

This machine I believe to be better for the purposes etnttemplated than either the purely centrifugal dustcollcctors or those which rely upon the straining action of porous cloth. 1tunites the merits of each, making the separation by centrifugal action of the former supplemented by the dust-collecting action ofthc r fibrous surface of the elotlnfa-s well as the strainin; a tion of the porous cloth, operating to strain out particles of solid matter carried \Vhat I claim as my invention. and desire to secure by Letters Patent is--- shell It, and a chambcr,1 ,provided, with an adjustable opening for the escape of a regulated portion ot the air through the apron, substantially as set forth. m

In testimony whereof I havehereunto signed my name in the presence of two witnesses.

JOHN SMITH.

l'n rn'eseuee ot- WM. .R. (H usox,

ll'nNnY 1C. .l'lnwanns.

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