US298206A

US298206A - Eollee mill

Info

Publication number: US298206A
Authority: US
Publication date: 1884-05-06
Anticipated expiration: 1901-05-06

Description

(NoModel.) 2 Sheets-Sheet l.

N. W. HOLT.

ROLLER MILL.

No. 298,208. Patented M8578, 1884.

w zyeieZ-oi" 2 Sheets-Sheet 2.

.N.'W. BOLT.

VROLLER MILL.

No. 298,206'. Patentearlvray, 1884.

UNITED STATES PATENT ,()iuucnA NOAH w. BOLT, OE EUEEALO, NEW YORK.

ROLIER-MILL.

SPECIFICATION forming part ofYLetter-s Patent No. 298,206, dated May 6, 1884.V

Application filed January 21, 1884. (No model.)

To all whom it may concern.-

Be-it known that I, N OAn W. HoL'r, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Roller-Mills, of which the following is a specification.

This invention relates to an improvement in that class of roller-mills in which two pairs of rollers are employed; and it has for its ob- IO' ject to provide a belt driving mechanism which can be tightened when required, and in which a counter-shaft is employedwhich is support ed in fixed bearings.

My invention consists of the improvement in the construction of the driving mechanism which will be hereinafter fully set forth, and pointed out in the claims. y

In the accompanying drawings, consisting of two sheets, Figure 1 represents an elevation of the driven side of a roller-mill provided with my improvement. Fig. 2 is an end elevation of the roller-mill. Fig. 3 is a side elevation of the tightening device on the driving side of the roller-mill. Fig. 4 is a horizontal section in line a: x, Fig. 3. Fig. 5 is an elevation of the driving side on a reduced scale.

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

A represents the side frames of the rollermill.

B B represent the fast rollers, and B B the slow rollers. (Indicated by broken lines in Fig. 1.)

@5N c represents the horizontal driving shaft arranged below the roller-mill, and C a beltpulley secured to the same.

D D are belt-pulleys secured to the shafts of the fast rollers B B above the driving-pulley C.

d is an endless driving-belt running around the pulleys C and D D', and communicating motion to the latter.

E represents an adjustable tightener-pulley the pulleys D D. This pulley is mounted on arranged on one side of the roller-mill belowsecured to the floor or to the side frames, A,

or to some other stationary part.

I represents an internally-toothed gearwheel, secured to the shaft h on the driving shaft e is journaled, is pivoted on the end of 6o the shaft h, so `that in adjusting the frame G it swings on the shaft h as an axis, thereby causing the pinion i to remain in engagement with the wheel I in all positions of the frame G. 'Ihe latter is provided at its upper end 65 with a gear-segment, j, arranged concentrically with the shaft h. The gear-segmentj is j made in the form of a dovetail, and moves in a bearing-piece, J, having a curved dovetail groove, j,whereby the upper end of the frame G is held against lateral movement, while capable of being adjusted in the are of a circle. 7c represents a worm-wheel engaging with the segment j, and mounted on a shaft, k', which is journaled in bearings Z, secured to the bear- 7'5 ing-piece J. The end of the shaft k is provided with a hand-wheel, Z', whereby it can be turned for adjusting the position of the frame G and for raising and lowering the pulley E. The driving-belt d runs around the lower side of the pulley C, thence upwardly and around the upper side of the pulley D, thence down- 4wardly and around the lower side of the pulley E, thence upwardly and around the upper side of the pulley D', and thence downwardly to the pulley C. The belt d is tightened by lowering the pulley E.

M M represent the belt-pulleys secured to the shafts of the slow rollers B B on the driven side of themachine. NN are pulleys secured to the end of the counter-shaft h below the pulleys M M, and m and a are endless belts running around the pulleys N N and the pulleys M M.

O represents an adjustable tightener-pulley arranged between the belts m and n, so as to operate againstboth belts simultaneously. The tightener-pulley O is mounted on a stud o r arbor, o', which is attached to a sliding piece, P, fitted between vertical guides or ways p p. The latter are attached to the side frame, A, and the piece P is made adjustable by a setscrew, q. 'Ihe power is transmitted from the pulley C to the pulleys D D and to the coun- IOO ter-shaft h by the belt d. From the countershaft the motion is transmitted to the pulleys M M', so as to retard the slow rollers l B, as desired. The belt d is tightened by adjusting the pulley E, and the belts m and a are both tightened simultaneousl y by adjusting the pulley O.

A friction-gear may be employed instead of the cog-wheels I i, if desired.

I claim as my inventionl. The combination, with two pairs of rollers, B B and I I3', of pulleys I) D and M M', secured to the rollershafts on opposite sides of the machine, a counter-shaft, Il, carrying a wheel, I, and pulleys N N, an adjustable pul` ley, E, mechanism whereby motion is transmitted from the pulley E to the wheel I, and endless driving-belts d, m, and 91 substantially as set forth.

2. The combination, with the fast rollers I3 I3 and the slow rollers l Y, of the counter shaft 71, supported in iixed bearings, a tightener-pullcy, E, a belt, d, driving said tightenern pulley and the fast rollers,mechanism whereby power is transmitted from said tightener-pul ley to said counter-shaft, and a belt -driving mechanism provided with a tightening device, and connecting the counter-shaft with the slow rollers, substantially as set forth.

3. rlhc combination, with the rollers 13B and B B, of the pulleys D D and BI M', counteisshaft l1, tightcncr-pullcy E, made adjust able concentric with said counter-shaft, meehanisnl whereby motion is transmitted from the tightencr-pulley E to said counter-shaft, and

mechanism whereby the counter-shaft is e011- neeted with the pulleys M M, substantially as set forth.

4C. In a roller-mill, the combination, with the counter-shaft lz, provided with a wheel, I, of the pulley E, shaft e, and pinion t', a frame, G, pivoted concentric with the shaft 71 and means whereby the frame Gr can be secured in position, substantially as set forth.

In a rollermill, the combination, with the pulleys M M', shaft h, pulleys N N, and belts ma, o1' a tightenerpulley, O, operating against both belts, substantially as set forth.

(5. In a roller-mill, the combination, with the counter-shaft 71 provided with a wheel, E, of a frame, G, pivoted concentric with. said shaft, and provided with a shaft, e, and pinion t', a gear-segment, j,formed on said said frame, and a wornrwhcel, k, substantially as set forth.

7. In a roller-mill, the combination, with the frame A and counter-shalt 71, of a frame, G, pivoted concentric with the counter-shaft, and provided with a dovetail segment, j, a bearingpiece, J, secured to the frame A, and having a curved dovetail groove, j', a shaft, c, supported in thc frame G', and means whereby the frame G is adjusted and secured in position, substantially as set forth.

\Vituess my hand this 12th dayfof January, 158i..