US360670A - Grain-scourer - Google Patents

Description

(No Model.)

' D. BTNIER, Jr.

GRAIN SGOURBR. N0. 360,670. Patented Apr. 5, 1887.

INVBNTOR BY @mi ATTORNEYS.

. u Mm NITED STATES PATENT OFFICE.

DAVID ETNIER, JD., OF MOUNT UNIN, PENNSYLVANIA.

GRAIN-Sconces..

SPECIFICATION forming part of Letters Patent No. 360,670, dated April 5, 1887.

Applicalion led June $29, 1886.

To all whom it may concern,.-

Be it known that I, DAVID ETNIER, Jr., of Mount Union, in the county of Huntingdon and State of Pennsylvania, haveinvented a new and useful Improvement in Grain-scourers, of which the following is aspecification.

The construction and combination of devices constituting my invention are as hereinafter described and claimed.

In the accompanying drawings, Figure I is a central longitudinal section of my machine. Fig. 2 is a cross-section on the line xx, Fig. l. Fig. 3 is a crosssection on line y y, Fig. l. Fig. Llisa cross-section on line z c, Fig. 1.

The cylinder of the scourer is formed in two sections, Aand A,which are secured together by bolts passing through radial circular flanges, as shown. The interior surface of the section A has parallel longitudinal ribs a, Fig. 2; but the other section, A', has a smooth interior, Fig. 3. The conveyer'arranged within said cylinder consists of a shaft, B, provided with spiral flanges C and C,which are of different construction-that is to say, the shaft B,which traverses the cylinder centrally from end to end, has a continuous spiral iiange, C, within the ribbed cylinder-section A, while the other part of the shaft, surrounded by section A, has a series of disconnected or independent spirally-bent arms, G.

The pitch of the spiral flange C gradually decreases as it approaches the cylindersection A', so that the grain is fed through the section A with gradually-lessened rapidity. The result is that the density or compactness ofthe mass and the pressure of the kernels upon each otherare gradually augmented and the grain thereby scoured and cleaned more and more effectively as it moves along. In this operation the ribs a obviously contribute ma'- terially to the desired result by adding to the area of frictional surface.

W'hen the grain passes from cylinder-section A into section Aits progress is no longer hindered by friction with ribs, nor is there a variation of pressure and rapidity of feed; but the radial arms C have all a like twist and are placed equidistantly on the shaft B, so as to act equally on the grain. The said arms serve to continue the progress of the latter toward the discharge end of the cylinder, and

Serial No. 206.655. (No model.)

also incidentally rub and scour it; but the chief means I employ for rubbing and scouring the grain consists of devieesI willnow describe.

A radial iiange, b, is formed on the outer end of cylinder-section A', and an annular piece, D, of leather or other material suitable to form a friction-surface, is applied to it, as shown in Fig. l. A rubber strip, c, may be placedpbeneath it, to give it more elasticity. The end of the cylinder-section A is opposed by a head, E,Whieh serves as a yielding rubber for scouring the grain. The said head E consists of a disk mounted on the reduced polygonal part d of the conveyer-shaft, and pro vided with an annular friction-piece, D',formed of leather or equivalent material. The head Eis adapted to slide lengthwise on the shaft B; but the latter, being square or polygonal, the head partakes of its rotation.

In rear of the head, and encircling the shaft B, I place a spiral spring, F, which supports the head with an elastic pressure. The tension of the spring, and thereby its pressure on the 'the head, may be regulated at will by means of a collar, c, which slides on the shaft B, and is secured by a clamp-screw, as shown in Figui.

It will now be understood that the spring F allows the head to yield sufiiciently to permit the grain to pass laterally between it and the fixed rubber, whereby it is scoured to the required degree. Such lateral discharge of the grain from the cylinder is of course effected by the rotation ofthe head combined with the pressure exerted by the spiral conveyer.

Additional to the scourer proper I propose to employ a polisher, which is constructed as follows: An annular hood, G, is permanently attached to the cylinder-flange, and incloses or surrounds both rubbers, and also projects a short distance over the back of the head E. To the outer side of the latter I attach an annular brush, H, which acts on .a roughened portion of the hood G, as shown in Fig. l.

The grain discharged from between the rubbers passes between this brush and the opposed roughened surface of the hood G, and is thereby polished by .being freed from fuzzy or light particles that may by chance still adhere to it after leaving the scourer proper, and is thus prepared for grinding.

ICO

2. In a grain-scourer, the oombinationmith the conveyer, the cylinder, and the fixed and rotating rubbers, of an nnnular hood or case surrounding said rubbers, and a brush fastened on the movable rubber, Substantially as shown and described.

3. In a grainseourer, the combination, with the eylinderseetion A, having interior longitudinal ribs, of the oylindenseotion A, having a smooth or ribless interior surface, a conveyer arranged as specified, and the fixed and rotating rubbers, as shown and described.

DAVID ETNIER, JR..

Vitnesses:

FRANK H. HARRIsoN, HENRY MCGIRVEY.

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