USRE9367E - Wheat steamer and drier - Google Patents

Description

G. T. HANNA. Wheat Steamer and Drier.

up. 9,367. Reissl led Aug. 31, I880.

' .INVENTORr Emma.

WITNESSES steam is passed through the grain to moisten I judgmentas experience can best'show, give heat to the :walls, far.v this or otherudesired.

way. In this passage it is conveyed into con-- PATENT OFFICE.

CYRUS T. HANNA, or PITTSBURG, PENNSYLVANIA.

WHEAT STEAMER AND DRIER.

To all whom it may concern:

Be it known that I, CYRUS T. HANNA, of Pittsburg, Allegheny county, Pennsylvania, formerly of Keokuk, lowa, have invented a new and useful Improvement in Processes and Apparatus for Preparing Grain for Grinding, which is" substantially as set forth hereinafter, referring to the accompanying drawings, in which- 1 Figure 1 is a vertical section of the apparatus on line at as, Fig. 2. Fig. 2 is a horizontal section of the same on line 3 y, Fig. 1.

, Myinvention relates to a process and apparatus for steaming and heating grain and feeding it to the grinding-stones hot, so that it may be ground while hot, to the end that the hull or bran may be easily removed and a better article of flour produced. l

The grainis passed in a continuous stream from a bin or chamber through a tubular chan-. us] to the burrs for grinding, or 'in some like tact with heating-walls "in a stream or sheet. so thin as to be heated and dried throughout its mass nearly uniformly. Itis carried down by its weight so, as to be evenly acted on by the heat. Before it passes onto the heated walls as well as warm it. I

The quantity of steam as well as of heat is regulated in each case according to the kind and condition of grain, so as to dry that already too moist, to moisten that too dry, to dry the skin so as to separate readily,.aud to put the grain-in best condition for. grinding. This is done in each case with such' degree of ing more or less of steam and less or more of result. p 7

The apparatus shown is hung upright, so as to form part of the grain-passage. It has an interior part, F cylindrical in form. This hasa'conical top, ii, which divides the grainevenly and passes it uniformly down the auuula'r space E, around it on all.sidcs.. fl;he walls B around this space E are inclosed by outer walls, inclosiug aspace between, closed at the ends to form a jacket. 'The interior part, F, is hollow also, and has a crossall near the top, separating into two parts. he

I SPECIFICATION forming part of Beissued Letters Patent No. 9,367, dated August 31, 1880;

Original No. 107,680, dated September 27, 1870.

Application for reissue filed April 22, 1879s outer chamber is also divided by cross-walls into two compartments.

Steam is admitted by pipes K L into chambers B and F, and heats them, and passespfl' by pipe G. This heats the grain in the thin sheet passing between and dries it.

Steam passes by pipe L, having regulatingvalve M and two branches, into chambers H G. Thesechambers have their grain-walls I J perforated with fine holes, which allow the steam to pass through into the grain to any degree desired to moisten it.

The grain being hot when it leaves the funnel 0, it is fed hot to the grinding-stones.

I claim- I 1. In an apparatus for preparing grain for grinding, the. combination of a steam-chamber and steam-conducting pipe provided witha valve, and a separate chamber located below the former for receiving steam or other heating medium, and a conducting-pipe connected therewith and provided with'a valve, as shown and described, whereby the amount of steam discharged and degree of. heat radiated are made separately regnlable, for the purpose set forth.

2. The body of the steamer and heater, pro- .rided at its respective upper and lower ends with the steam-discharging cone and thefunnel 0, whose sides have the same, or nearly the same, superficial area, and are inclined at the same, or nearly the same, angle to a vertical plane, as shown and described, whereby.

the grain is caused to disperse or spread out .whicikthe grain-flows, and for. the purpose I described.

in a thin sheet while being steamed, and then 4. The combination of a series of'pipes, K

L G d d d, with the steam-chambers B F EU,

and removing the steam and carrying oi the 5.0 cobinati I tira grain-steaming apparatus, .ofthe nunel-shaped double-walled chamber 0, placed thereunder, as and for the purpose specified.

6. The combination of thesteam-chambers condensed steam, substantially as herein shown H and 0, having perforated w alls, and the steam-chambers Fand B, having imperforate walls, to form the steaming-chamber J and drying-chamber E, substantially as shown and i 5 described, for the purpose specified.

7 The process of treatingand feeding grain for grinding, which consists in moistening it,

by means of steam and immediately subject- 'ing it to the action of dry heat to expel the surplus moisture, and-then at once feeding it 10 while'still hot to the grindingstones, as hereinbefore set forth. 1

, CYRUS T. HANNA. Witnesses:

-W. I. MILLER,

A. J. SPEDDEN.'

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