US113972A - Improvement in flour-bolts and reels - Google Patents

Description

atoit (that JOHN R. BRADFIELD, OF ADA, MICHIGAN.

Letters Patent No. l13,972,'dated April 25, 1871.

IMPROVEMENT IN FLOUR-BOLTS ANDREELS.

The Schedule referred to in these Letters Patent and. making part of the same.

To whom 'it may concern Be it known that JOHN R. BRADFIELD, of Ada., in the county of Kent and Statel of Michigan, have invented a new and useful Improvement in Sectional Flounolts and Reels; arid Ifdo declare that the fol-1 sections and Figure 3 is an elevation partly in section of the reel-head.Y

Like letters indicate like parts in each vfigure.

This invention has for its object au improvement in the construction of door-bolts and reels, whereby,v

in a reel of a given length, the meal is subjected'to the action of a much greater area of bolting surface, and is more frequently turned over than in a reel of the saine length constructed in the usual manner.

The invention consists in dividing the reel into longitudinal chambers by radial partitionsl extending from the arms at the head to those at the foot of the reel, and in each chamber so formed placing a frame of corresponding shape covered on all sides with boltingcloth, leavingya space for the passage of the our between the internal faces of the bolt and the adjacent partitions; also in the general construction of its various parts, as more fully hereinafter lset forth, 'thev said improvements being edually applicable to all rotating screens used for the separation and cleaning of grain and seeds.

In the drawing- A represents a boltng-chest provided with the diaphragms a t at the head and foot of the reel, respectively, the former for preventing flying specks from reaching the flour which passes down the central compartment7 and the latter the admixture of the bran discharged at the foot of the reel with the hour.

c is the feed-chute through the upper end of the chest.

lB is the reel-shaft journaled in the ends of the bolting-chest, andslightly inclined from head to foot.

The shaft is rotated by belt or gearing from any convenient source of power, Aand is provided, near the ends ot the chest, with radial arms B', preferably six at each end.

yC are'partitions radiating from the shaft and extending from the arms at the head to-those at the foot of the reel, dividing the reel into six triangular compartments in the direction of its length.

D is a head secured to the shaft against the upper reel-arms to close the upper ends of the compartments.

In the head is a series of feed-openings, one open ing into each compartrnant,vv and provided with a regulating-slide, E. p

On the head D is secured 'an internally-inclined .or beveled flange, F, into which the end of the feed-spout c projects.

G.' are triangular frames, covered on the sides with bolting-cloth G', resting at each end on ledges d at the ends of the partitions C, so as to leave a space between the internal faces and'apexes and the adjacent partitions.

The frames are secured in their compartments by buttons e, or by any other suitable means, so that they may 'readil y be removed.

The operation' of my improved bolting apparatus is as follows:

The meal enters ,successively each compartment as it reaches the lowest point of the periphery, falling on the outer face o'f the `triangle; as it proceeds up it falls against one of the 'inner faces of the triangle until that face is tangent above the horizontal plane, when it is thrown to the other inner face, and so on in the continued rotation of the reel.

It is evident that the greater area of bolting surface presented to the meal, (three times that of a reel encircled with it in the usual mannen) and the frequency with which it is turned over, must insure a rapid and thorough separation of the iiour from the bran and its-discharge from the bolt.

The flour which passes' through the interior faces of the bolt-sections falls on4 the partitions and is by them discharged tothe conveyor, while the bran is discharged from the ends-of the bolt-sections in the usual4 manner.

It is not necessarythatthe reel shall be hexagonal in form, nor the bolt-sections to be triangular in section, only that the former shall be polygonal, and that the sections of bolting-frames shall approximately cor? respond thereto.

This improvement is equally applicablegto the reels of all grain and seed-cleaners and separators.

The discharge of the meal through thebolt-sect-ions depends upon the pitch of the reel-shaft.

The reel and bolt so constructed can be of lcssthan one-half the length of one having the cloth encircle it and do the same amount of work, and requires less power to drive it, as the reel is more nearly in balance as it has meal in all the sections at once, `while in the ordinary reel'the entire weight of the meal is at the bottom; the reel and ease being much shorter occupy less room and cost less to build, and when repairs to the cloth are necessary the section needing such repairs only need be removed to make them, while the reel may continue in use by closing the slide of the empty compartment.

In reels of the ordinary construction Where .the bolting surface has always the same area, where they cannot be fed with meal fast enough, from lack of power to grind, the'tlour is apt to'be specky l \With my improved apparatus, from low water or fromv any other c`ause, IY am enabled. to obvate this difficulty -by shutting oli` one or. more 'sections,'a1:id thus limit the boltiug capacity to the volume of meal delivered to it.

n jWhat I claim as my invention, and desire to Vsecure by Letters Patent, is-.

H. F. Emails, JAS. OBRIEN.

Images