US263906A

US263906A - Noah w

Info

Publication number: US263906A
Authority: US
Publication date: 1882-09-05
Anticipated expiration: 1899-09-05

Description

(No Model.)

N. W. HOLTV.

ROLLER MILL. No; 263,906. Patented Sept. 5,1882. u

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UNITED STATES NOAH w. Hormon BUFFALO, New-YORK.

PATENT OFFICE.

ROLLER-MILL.

SPECIFICATION formingpart of Letters Patent No. 263,906, dated September 5, 1882.

Application mea rune 2, 1882. (No model.)

To all whom it may concern lowing is a specification.

This invention relates more particularly to that class of roller-mills which are employed for the reduction of grain and similar substances, and has reference to the means for l driving the rollers by an endless belt.

The objects of my invention are to avoid theslipping of the endless belt'whereby the rollers are driven, to prevent the slow roller from increasing its speed by direct or indirect contact with the fast roller, to afford large coutact-surfaees for the endless driving-belt on the roller-pulleys, and to permit the slack ot' the belt tobe readily taken up so as to keepthe belt taut. Y

My invention consists, to that end, of the peculiar improvements in the driving mechanism which will be hereinafter fully set forth, and pointed out in'the claims.

In the accompanying drawings, `consisting of two sheets,Figure lis a side elevation of my improved driving mechanism. Fig. 2 is a vertical section in line a: a', Fig. 1. Fig. 3 is a cross-section in line y y, Fig. `1.

Like letters of reference refer to like parts in the several iigures.

, Arepresentsoneot'thestationarysideframes ofthe machine; b, the slow roller; b', the shaft thereof; c, the fast roller, and c the shaft thereof 5 and B C, the journal boxes or bearings in which these shafts are supported on the side frame, A.

D represents the belt-pulley secured to the shaft b of the slow roller, and E represents the belt-pulleyfwhieh is secured to the shaft c of the fast-roller, and which is smaller in diameter than the pulley D to produce the llesired diterential speed in the rollers. F represents a guide-pulley arranged about in the same horizontalline with the pulleys D and E.

G represents `a tightener-pulley, which is arranged below the pulleys D E.

g represents an endless drivin g-belt, which runs around the pulleys D, E, F, and G in the direction of the arrow in Fig. 1, the pulleys D,

tal fulerum pin or bolt, i, secured to the side frame, A. The pulley G is mounted in the upper bit'urcated end of an arm, J, which is shorter than the arm H, and which swings preferably on the same horizontal pivot or bolt, i, to which the arm H is attached. The lower end of the arm H is preferably made hifurcated, and straddles the lower end ot the arm.J on the bolt c', as represented in Fig. 3. The upper or free end of the arm J is connected with the side t'ranle, A,vby a screw-bolt, k, which passes through a lug, l, cast with or secured to the side frame, A. The screw-holt lc is provided with a screw-n ut, m, whereby it can be adj usted.

n is a spiral or other suitable spring, which isinterposed between that portion of the screwboltwhich is attached to the arm J and the portion which passes through the lug l, so as to form a yielding or elastic connection of the arm J with the side frame.

By properly adjusting the screw-bolt 7c the upper end of the arm J ,in which the tightenenpulley Gismounted,is drawn dowuward,where by the belt is properly tightened.

The pressure of the belt against the outer portion ot' the pulleyF holds the inner side of the pulley F against the pulley E,thereby compelling both pulleys, E and F, to rotate with the same peripheral speed, whereby the belt is prevented from slipping and the desired differential speed of the rollers easily maintained.

Power is applied to the shaft c' of the fast roller by means of a pulley, O, attached thereto, and a driving-belt, l?, passing around said pulley, or by any other suitable means.

I claim as my inventionl. The combination, with a pair of' rollers, b c, provided respectively with pulleys D and E, ot' a guide-pulley, F, a tightener-pulley, G, and an endless belt, g, running from the pulley D to the guide-pulley F, thence to the tightener-pulley 1 G, thence to the pulley E, and

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thence to the pulley D, substantiall'y as set forth.

2. The combination, with a pair of rollers,

b o, of the pulleys D and E, mounted on the 5 shafts of said rollers, n. guide-pulley, F, mounted on a. pivoted arm, H, a tightener-pulley, Gr, mounted in a pivoted arm, J, and an endless belt, g, running around said pulleys, substantially as set forth.

3. Theeombination, with a. pair of rollers,

b c, of the pulleys D and E, mounted on the shafts of said rollers, a guide-pulley, F, a tightener-pulley, G,a.n endless belt, g, and e screwbolt, k, and spring n, whereby the tightenen pulley can be adjusted, substantially as set 15 forth.

NOAH W. HOLT. Witnesses:

GHAs. J. BUGHHEIT, Crus. F. GEYER.