US227970A - Pulverizing apparatus - Google Patents

Description

' v 3Sheets-Shee't 1. R. G. FAIRBANKS 817 D. E. BREINIG'.- I

Pulvrizi ng Apparatus.

No. 2 7,970- Patented May 25, 1880.

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ATTORNEY,

N-FETERS, PHDTO-UTMOGRAPHER, WASHINGTON D C 3 sheets sh eet 2. R. G. FAIRBANKS 81; D. E. BREINIG.

Pulverizing Apparatus. No. 227,970. Patented May/ 25,1880.

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ATTORNEY sweets-sheets.

RYG FAIRBANKS 8v D. E. BREINIG,

Pulverizing Apparatus. No. 227,970. Patented May 25, I880.

ATTORNEY N. PETERS, PHDTO-LFFHOGRAPHBK, WASHINGTON. D. C,

UNITED STATES PATENT OFFICE.

REUBEN G. FAIRBANKS, OF FORT ANN, AND DAVID E. BREINIG, OF BROOK- LYN, NEW YORK, ASSIGNORS TO THE BRIDGEPORT WOOD FINISHING COMPANY, OF BRIDGEPORT, CONNECTICUT. 4

P ULVER|ZING APlARATUS.

SPECIFICATION forming part of Letters Patent No. 227,970, dated May 25, 1880.

Application filed November 21, 1879.

To all whom 1t may concern:

Be it known that we, REUBEN G. FAIR- BANKS, of Fort Ann, Washington county, and DAVID E. BREINIG, of Brooklyn, Kings 5 county, State of New York, have invented a new and useful Improvementin Pulverizing- Mills, which is fully set forth in the following specification and accompanying drawings, in which- IO Figure l is a front View of our improved mill, partially in section; Fig. 2, a longitudinal central section thereof; Fig. 3, a front view of the mill with the gearing removed, for the purpose of driving the mill by a belt, and

- also showing a bolting apparatus for bolting the pulverized material; Fig. 4, an end view of the bolting apparatus; Figs. 5 and 6, (letached views thereof.

The object of our invention is to pulverize 2o quartz and other mineral substances more perfectly than has heretofore been done in a mill into which the material is constantly fed and from which the fine powder is constantly being delivered. This is accomplished by the devices which will be now explained.

A represents the foundation; B, the upright supports; O, t e shaft; D, the roller-bearings; E, the cylinder; F, the lining thereof; G, the hopper; H, the screw -feed; I, the funnel- 0 shaped outlet; J, the separating-receiver; K,

the bolter; L, the receiving-box; M, the upright bolter-bearing; N, the bolter-shaft; O, the bolt-check and shaft-bearer; P, the blower; Q, the air-pipe; R, the blower-pulley; S, the 3 5 driving-pulley; T, the blower-pulley belt; U,

the feed-screw pulley; V, the feed-screw driving-pulley; WV, the driving-shaft; X X, the

shaft and cylinder gears; Y, the oylinder-pulley.

The cylinder is lined with glass, Esopus, Arkansas, or Washita stone, and is supplied with a sufficient quantity of broken uncalcined quartz or pebbles in the usual manner, and its rotation is obtained from driving-shaft W, either by gears X X or pulley Y, as may be preferred.

The operation of the mill is as follows: The

crushed material, of about sixteen-mesh size, to be pulverized is fed continuously into hopper Gr, falling upon feed-screw H, the revolv- 5o ing blades of which carry it within the cylinder, where the broken quartz or pebbles grind it by their violent contact as the cylinder is slowly rotated on shaft 0, bearing on roller D. Blower P, actuated by pulleys R S and belt T, forces through pipe Q a strong blast of air within cylinder E, and, as the material gradually becomes sufficiently fine and light, blows it through funnel I into bolter K, when it strikes against boltingcheck O, which so retards it that it falls to the inner surface of the bolter, and thence, through its meshes of various degrees of fineness, if desired, into a receiving-box partitioned to receive the several grades as coarser or finer meshes deliver them.

If the separating-receiver J is used in preference to the bolter, the outcoming powder will be carried by the current of air into the first division. The coarser and heavier particles will fall into the-receiving-chamber beneath, but the lighter will be carried npand over the first Wall of partition, where, in the diminished current, the heavier particles will, A in' their turn, seek the receptacle beneath, while the lighter will pass up and over the second wall of partition, to drop or pass up and over a third partition, as their weight may be. The final chamber should be closed with muslin to promote the circulation by allowing the air to escape through its pores after its passage through the mill and various separating-chamhers.

What we claim, and desire to secure by Letters Patent, 'is- The combination of a blower, a funnel-shaped outlet, and a bolter provided with r a checkpiece, constructed and operating together, substantially as and for the purposes set forth.

REUBEN Gr. FAIRBANKS. DAVID E. BREINIG.

Witnesses MYRON PERRY, F. HURD.

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