US624774A - Crushing or grinding mill - Google Patents

Description

No. 624,774. Pathted May '9, I899.

n. ELLIN.

CRUSHING 0B GRINDING MILL.

(Applicatioh'filed Mar. 3, 1898.)

(No Model.) 2 Sheets-Sheet I.

v i r l 9 *2 "WIN" g A 2o 3 1 Q; I \II h J w fi 9f 2 i a J) 'INVENTOR Ro er-[gain ATTORNEYS we cams PETERS co PHOTO LITHO., wnsnworuu, m c,

No. 624.774. Patented May 9,1899.

n. ELLIN.

BBUSHING 0B GRINDING MILL. (Application am; Mar. 8, 1898.) (No Model.) 2 Sheets-Shaet 2 a3 WITNESSES: U 9 zy INVENTOER I 1 Y RoZemEZZz'n 1 J0 J ATTORNEYS is a section along 00 m, Fig. 2.

NITED STATES PATENT OFFICE.

ROBERT ELLIN, OF YONKERS, NEW YORK.

CRUSHING OR GRINDING MILL.

SPECIFICA'JPION forming part of Letters Patent 110,624,774, dated May 9, 1899. Application filed March a, 1898. Serial No. 672,426. on model- To all whom ifmay concern:

Be it known that 1, ROBERT ELLIN, a citizen of the United States, residing at Yonkers, in the county of Westchester and State of New York, have invented new and useful Improvements in Crushing or Grinding Mills, of which the following is a specification.

B y means of this invention a mill is obtained which can be readily set for the required work and effectively fed, as set forth in the followin g specification and claims and illustrated in the annexed drawings, in which- Figure 1 is a sectional elevation of the mill. Fig. 2 is a section along w, Fig. 1. Fig. 3

Fig. 4 is a section along y y, Fig. 2. z 2, Fig. 2.

These mills, as known, have revolving,-

crushing, or grinding wheels 1, generally three or four in number, although this number can be varied. The wheels are ranged about or run over the bottom 2 of a pan or chamber and are shown with their shafts 3 having bearings or sleeves 4, jointed or hinged at 5 to a central or upright shaft 6, suitably rotated by any suitable mean s-as, for example, by gears '7, 8, and 9, Fig. 1. The sleeves or bearings 4 are each shown with a lug or tapped eye 10 for the engagement of-screw 11.

Between screw 11 and driving-shaft 6 is braced discharging at mouths 18 on the bottom 2 in front of the wheels 1. If seen fit, the mate- Fig. 5 is a section along inserted into a suitable tap in the main frame orsupport of the'mill, and by rotating the body 21 the shoulder or bearing 20 can be set higher or lower.

The shaft 6 is shown with a shoulder 22, be tween which and the bearing 20 is a spring or elastic or yielding ring 23, a metallic ring 24,

ing-wheels encountering pieces of material that are not readily crushed and also to per-% mit of the vertical. adjustment of the shaft. By setting or turning the bearing 20 higher or lower the shaft, with the wheels 1, is setin proper positionrelative to bottom 2 or to the material under treatment. The shoulder 29 prevents shaft 6 lifting or risingout of place, and such shoulder can be adjusted as required for snugly confining the balls 28. Said balls 28 and 25 ease the rotation of the shaft.

The bearing 20 can be rotated or set by gear 31, Fig. 1, suitably feathered on thimble 21 and actuated by miter-gear 32 and shaft 33, suitably located to be in reach or accessible to the attendant. The gear 31 is suitably supported by ring or carrier 34, secured to the main frame or support 35 of the machine. By mounting gear 31 on antifriction-balls its rotation is eased. The rotation of gear 31 and of screw ,30 will effect adjustment, as seen.

The side of the pan is provided with or formedbya screen 36, as is customary in'mills of this kind, The feed 13 or 19, being central or within the arrangement of wheels 1}, is in position to effectively supply material to each wheel through the mouth parts 18 of conduits 17. The gear 8 is shown drum-shaped or of such size that the shaft 6, withits gear 7, can be adjusted or move without losing mesh. The central hopper revolving with or forming part of shaft 6, said hopper being provided with conduit or pipes, the proper proportion of material to be crushed is conveyed and deposited simultaneously, constantly, and with certainty upon the circular die or crushingpath 2 immediatelyin front of each crushingwheel.

What I claim as new, and desire to secure by Letters Patent, is

1. In a grinding-mill, the combination with a pan and grinding-wheels, of a centrally-an; ranged hollow shaft provided with a feed-hopper and having a plurality of perforations formed at a point beneath the hopper, a conical distributer arranged in'said hollow shaft, the base of said conical distributer extending v entirely to the inner wall of the hollow shaft at a point immediately below the perforations I therein, and a plurality of feed-chutes.lead-- ing from said perforations and terminating between the grinding-wheels, substantially as j described.

2. In a grinding-mill, the combination with a pan and grinding-wheels, of a'central-ly-arranged hollow shaft provided with a feed-hoppersurrounding vthe shaft and provided with a-discharge end disposed centrally within the' shaft, said shaft having a plurality -of feedopenings establishing communication be tween the upper outer portion and the inner lower portion of the hopper, a conical distr-i-buter arranged in the hollow shaft beneath I the hopper, and a plurality of feed-chutes leading from the hollow shaft at the baseof I the distributor downwardly between the grinding-wheels, substantially as described.

hinged to the shaft, horizontal shafts journaled in said sleeves and carrying at their outer ends grinding-wheels arranged to travel in a circular path in said pan, springs arranged above the sleeves and hearing at one end against the upright shaft and at their oppo- 40 site ends against a support on the upper side of the sleeves, and means for adjusting the tension of the springs, substantially as described.

4. In a grind'ing-mill,the combination with screw-sandtheupright-shaft,horizontalshafts 5o journaled in thesleeves,.and grinding-wheels mounted on the outer ends-of said shaftsand arranged to travel in a circular path in the pan, said-screws opera-ting to adjust the tension of said springs and press the wheels into

Images