US1226562A - Grits-separator. - Google Patents

Description

Patented May15,1917.

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F. E. MILLER.

GRITS SEPARATOR.

APPLICATION FILED 050.14. 1915.

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F- E. MILLER.

GRITS SEPARATOR.

APPLICATION FILED DEC. 14. 1915.

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FOREST E. MILLER, 01? NEWBERRY, SOUTH CAROLINA.

GRITS-SEPARATOR.

Specification of Letters Patent.

Patented May 15, 1917.

Application filed December 14, 1315. Serial No. 66,795.

, State of South Carolina, have invented new and useful Improvements in Grits-Separators, of which the following is a specification.

This invention relates to grits separators for separating grits from bran and meal, and it has for its object to produce a machine of simple and improved construction, whereby at a single operation two grades of grits, coarse and fine, may be separated from the bran and] the meal, thus securingfour products by a single passage of material through the machine.

A' further object of the invention is to produce a machine of the class described of simple and improved construction, by the use of which the several grades of-grits will be subjected to independent blasts of air from asingle fan for the purpose of eliminating impurities.

Vith these and other ends in view which will readily appear asthe nature of the inwhich will be hereinafter fully described.

and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claims may be resorted to when desired.

In the drawings,-

Figure l is a side elevation of a machine constructed in accordance with the inven tion.

Fig. 2 is a top plan view of the same.

Fig. 8 is a longitudinal sectional View taken on the line 33 in Fig. 2.

Fig. 4 is a transverse sectional-view taken on the line 4lin Fig. 1. v

Fig. 5 is a transverse sectional view taken on the line 55 in Fig. 3.

Fig. 6 is a transverse sectional view taken on the line 66 in Fig. 3.

Figs. 7 and 8 are detail views of portions of the coarse and. time grits sieves and related parts. 4

Corresponding parts in the several figures are denoted by like characters of reference.

The frame of the improved machine which is provided with legs or corner posts 16 supports a hopper 17 and a fan casing 18, the latter containing the rotary fan 19 which is mounted on a shaft :20. The hopper contains a corrugated feed roller 21 mounted on a shaft 22, said corrugated roller operating in conjunction with the feed gate 23 to regulate the passage of material from the hopper tothe shoe 2%. The latter consists of a suitable casing which is supported for reciprocation, and it is actuated by means of a lever 25, one end of which is connected by a pitman 26 with a crank 27 on a main driven shaft 28, the latter having a pulley 29 whereby it is driven from a suitable source of power, it being. obvious that, if desired, the shaft may be manually rotated. The driven shaft 28 has a pulley 30 from which a belt or band 31 is trained over pulleys 32, 33 on the shafts, and 22, respectively, thereby transmitting motion to the fan and to the feed roller, it being evident that pulleys of proper dimensions will be used to secure the desired relative speed of the parts. For the purpose of securing the feed gate in adjusted position any convenient means, such as a bolt 23 carried by a bracket 24: and engaging a slot in the feed gate may be employed;

The shoe 24 contains a bran sieve 84, a coarse grits sieve 35 and a fine grits sieve 36, arranged inthe-order named, the bran sieve being uppermost. The shoe has an outlet for the meal sifting through the line grits sieve, said outletv consisting of a spout 37 which is slidably connected withthe shoe from which it extends laterally through an opening in the side of the casing, a flanged guide member 37 being provided to support the said spout. The latter, as seen in Fig. 5, is provided with a hook portion 38 adapted to engage a pin 39 lying in the path thereof to limit the outward movement of the spout. By pushing the spout inward within the shoe the latter may be raised clear of the frame or outer casing whenever needed in order to afford access to underlying parts.

Extending forwardly from the fan casing and communicating with the outlet of said casing is a wind trunk 38 having a longi tudinal partition 39,. whereby separate compartments 40 and tl are formed, each of said compartments being provided with an outlet designated, respectively, by 42 and 43. The bran sieve 34: projects beyond the tail end or discharge end of the shoe 24, and it overhangs the tail end of the wind trunk so that bran discharged over the sieve 34 will be blown clear of the machine. The sieves 85 and 36 are provided, respectively, with deflectors 44 and 45, whereby material discharged over said sieves will be con- .veyed to hoppers or funnels 46, 47 communicating, respectively, with the compartments L0, 41 of the wind trunk, said hoppers being positioned directly above the outlets 42, 43. The material discharged over the sieves 35, 36 v.will thus be subjected to the blast of the fan before reaching the outlets 42, as, and the coarse and fine grits will thus be cleaned from dust, fine bran and other impurities, the impurities mingling with the bran as the latter is blown from the machine. The funnels 4-76, -17 are each provided with a deflecting lip 4E8 depending partly within the wind trunk, as clearly seen in Figs. 3 and 6, and over which the grits will be partly guided before subjected to the action of the blast.

It will be seen that by the improved machine, bya single operation, crushed corn may be divided into four distinct commercial products, namely, coarse grits, fine grits, meal and bran, the grits being thoroughly cleansed from all impurities. The machine is simple in construction, economical in operation and thoroughly efficient for the pur poses for which it is provided.

Having thus described the invention, what is claimed as new, is

1. In a grits separator, a trunk having a longitudinal vertical partition whereby com partments are formed lying adjacent to each other with their bottom portions in the same plane, each compartment having an inlet in its top portion and an outlet in its bottom portion, the outlets being in vertical registry with the inlets and each inlet having a funnel, a shaking shoe having a bran sieve overhanging the wind trunk to discharge material in the path of the air current issuing therefrom, and sieves in the shaking shoe havingdeflectors to discharge material from the separate sieves to separate inlet funnels.

2. In a grits separator, a trunk having a longitudinal vertical partition whereby compartments are formed lying adjacent to each other with their bottom portions in the same plane, each compartment having an inlet in its top portion and an outlet in its bottom portion, the outlets being in vertical registry with the inlets and each inlet having a funnel, a shaking shoe having a bran sieve overhanging the wind trunk to discharge material in the path of the air current issuing therefrom, and sieves in the shaking shoe having deflectors to discharge material from the separate sieves to separate inlet funnels, said shaking shoe being provided with a meal outlet in the bottom intermediate the ends thereof.

3. In a grits separator, a wind trunk having a longitudinal vertical partition producing separate compartments, a shaking shoe having a bran sieve overhanging the discharge end of the wind trunk, sieves in the shaking shoe for the production of prod ucts of several grades, and means for con-' ducting said products through the wind trunk in the path of the wind currents issuing through the compartments thereof.

a. In a device of the class described, a wind trunk having a longitudinal vertical partition producing separate compartments, a shaking shoe having a bran sieve overhanging the discharge end of the trunk, sieves in the shaking shoe for the production of several grades, hoppers for conduct ing said products through the wind trunk in the path of the air currents issuing through the compartments thereof, and lips extending from said hoppers within the compartment of the wind trunk.

In testimony whereof I affix my signature in presence of two witnesses.

FOREST E. MILLER. lVitnesses H. C. IIOLLOWAY, B. V. CHAPMAN.

Copies of this patent may be obtained for five cents each, by addressing the .Gommissioner of Patents. Washington, D. 0.

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