US197985A - Improvement in grinding-mills - Google Patents

Description

4Sheets-Sheet 1.

A. H. WAGNER. Grinding-Mill.

NO. 197,985. Patented Dec. ",1877.

4 Sheets-Sheet 2.

A. H. WAGNER. Grinding-Mill.

No. 197,985. P1tehted Dec. 11,1877.

Il J m 9 u I By luis .dtforney,

4 Sheets-Sheet 3.

e A.H.WAGNER. Grinding-Mill.

No. 197,985.' Patented Dec. 11, 1877 UNITED STATES PATENT OFFICE.

7 AUSBERT H. WAGNER, OF GHIGAGO, ILLINOIS, ASSIGNOR T0 ANNA Gr.

' WAGNER, OF SAME PLACE.

IMPROVEMENT IN GRl'NDING-MILLS.

Specification forming part of Letters Patent No. 197,985, dated December 11, 1877 application fild September 27, 1877.

' serve its proper relative position in the casing,

Whether it be in a vertical or horizontal position, which end I attain by monnting the driving-spindle, the inner end of which is connected rigidly With the stone, in a long pipeb0X bearing, rigidly secured to and projecting from thecasing, the outer end of which bearing is provided With a flattened recessed portion for the reception of a driving-pnfleykeyed npon the spindle.

The obj ect of the next part of my invention is to enable the casing and grindstones to be readily converted froin a vertical to a horizontal position, or vice versa, which end I attain by means of a main frame, in uprights of which the casing is jonrnaled, said framebe- 'ing provided With a hinged ar1n, to support theonter end of the spindlebox when the casing and stones tre in a vertical position, and With arest beneath the suspended casing,

to secure the spindlebox whenthe stones are in a horizontal position.

The object of the next part of my invention is to provide a feeding apparatns, adapted to be placed in different positions on the casing, so as properly to feed the mill when used either as a vertical or horizontal one, which end I attain in the manner and by the means hercinafter specifi0ally set forth.

The next part of mydnvention relates to the stationary or bed stone. Its object is to allow r the stone to yield t0 accommodate itself to the rnnning stone, and also render it adjnstable in relation to said stone, in'order to grind fine or coarse, which ends I attain in the manner and bythe means hereinafter specificafly set forth. In the accompanying drawings, which show all my improvements as embodied in one machine in the best way now known to me, Figure 1 is a view of my improved grinding-mill as seen from the rear; Fig. 2, a vertical central section therethrough on the line 1' 1 of Fig.; 1; Fig. 3, a horizontal section therethrough on the line 2 2 of Fig. 1; Fig. 4, a top or plan vieW of the bedstone and its adjusting device, part'of the stone being broken away to show the mechanism beneath; and Fig. 5 represents a view in elevation, partly in section, of my improvements converted into a mill the faces of the stones of which are in a plane substantiafly horizontal, all the precedin g figures representing a mill in which the faces of the stones are in a vertical plane.

The main fra1ne A, which is preferably of cast-iron, is provided with two nprights or standards, A a cross-piece, -A and with a hinged arm or prop, A

' The casing of the mill is divided circ'nmferentiallyinto two sections, B B, hinged togetherat I), and adapted, when closed, to be locked by the swinging bolt and thumbnnt I). The casing is suspended by trunnions or journals b projecting from the periphery of section B, Which have their bearings in snitable boxes in the upper ends of the uprights A by which means the casing and grindstones m0nnted therein can turn freely.

The stationary or bed stone 0 of the mill is supported in section B of the casing by its adjnsting mechanism, and the rnnning stone D is supported in section B by its driving spindle or shaft E, on the end of Which it is fimnly keyed. This spindle is mounted in a long pipe-box bearing,F, rigidly secnred to and projecting from the section B, which bearing is provided ncar its outer end with a flattened recessed portion, f, across Which recess the spindle extends, and has its extreme end j ournaled in a continuation of the tubnlar por tion of the pipe-bearing. A driVing-pnlley, F,

keyed npon the spindle is rriounted in the re cess f, thereby preventing endwise movement of the spindle in its bearing, and enabling me to drive the rnnning stone steadily, and preserve its relative position in the casing.

The inner end of the pipe-bettring, where it with its yielding capacity on its pivots.

The eyebolts G are provided with inclines or cana-surfaces g, corresponding with similar surfaces or flanges t on a plate, I, mounted in the casing, and turning around the central hnb or bushing H beneath the stone. The shanks of the bolts pass through slots i in the tuming-plate between the inclined fianges, and through apertures in the casing, and are provided on the outside of the casing With springs or washers g,- preferably of rubber, which are confined in place and their tension regulated by screw-nuts g. The plate I is turned upon its axis, to cause its inclines to act upon those of the bolts, in order to adjust the stone, by means of a screwrod, J, pivoted to the plate, and projecting through the casing, upon the threads of which rod, outside the casing, is placed a suitable thumb wheel or crank.

By the rotation of this wheel upon the rod J, and against the casing, the cam-plate I is turned upon its axis, causing its inclines to ride under the inclined surfaces of the bolts, forcing them inward against the tension of their springs or washers, and adjusting the stone, the springs serving to retain the bolts steadily and firmly in their adjusted position.

It Will thus be seen that the bed-stone can be adjusted in relation to the running stone With the greatest accnraey, and from the outside of the casing, in a convenient manner, whereby I am enabled to grind fine or coarse, at pleasure.

The feeding apparatus consists of a hopper, L, supported by a bracket-frame, M, detachably secured to the casing by any suitable means. Beneath the hopper is a shoe, N, pivoted upon the end of a pivoted, forked, vibrating lever, 0, the forks of which extend npon opposite sides of the pipe-box bearing, and are provided With pins 0, which pass through apertnres in said bearing, and are operated upon by a cam-surface, 6, on the driving-spindle E, bywhich means the shge is given a shaking motion for a wellknown purpose. The shoe empties into a funnel, P, inserted in the mouth of the feed-pipe Q, leading to the hub or bushing H and eye of the stone.

The feed is regulated by adjusting the inclination of the shoe relatively to the funnel in a well-known way.

To couvert the mill from a vertical position,

as shown in Figs. 1 to 4, inclusive, of the drawnals, clown into the recess or rest a in the crosspiece A of the main frame, where it may be secured by the same means that held it to the prop, shown in the present instance as consisting of two set-screws. Then detach the hopper-frame from its position upon the circumferential periphery of the casing, and attach it to the curved plate m upon the now upper side of the casing, and insert the funnel into the opening b in the casing directly above the hub or bushing H, and leading to the eye of the stone. paratus necessitates the employment of an additional vibrating lever, 0, to shake the shoe, one end of this secondary lever being connected with the forked lever 0, and the other pivoted to and supporting the rear end of the shoe.

The issuing spout or nozzle B is secured between the sections of the casing in such a manner that it can be turned to accommodate the changes in position of the casing and stones.

When the mill is in a horizontal position, the sections of the casing may be opened and laid back for conVeniently dressing the faces of the stones.

The many advantages of my improvements Will be appreciated by those skilled in the art;

I claim as 1ny invention- 1. The combination, substantially as hereinbefore set forth, in a convertible grinding-mill, of the frame, the casing surrounding the stones journaled therein, the long pipe-box bearing rigidly secured to the casing and provided at its outer end with a recessed portion for the reception of a driving pulley, the spindle mounted in said bearing and driven by the pulley, and the running stone rigidly fixed upon the-inner end of the spindle, whereby the stone runs steadily and preserves its proper relative position in the casing, whether the driving-shaft is secured in a vertical or horizontal position in the frame.

2. A cast-metal main frame for convertible grinding-mills, constructed substantially as described, provided with a hinged arm or prop adaptedto support the driving-shaft of the mill in a horizontal position. 7

3. The combination, substantially as herein before set forth, of the main frame provided .with the cross-piece A 'and arm or prop A the casing: in which the stones are mounted journaled in said frame, and the driving-shaft, whereby the casing may be rocked upon its jonrnals to couvert the mill from a horizontal to a vertical one, or vice versa, and the shaft be securely held in 'either position.

4. The combination, substantiafly as hereinbefore set forth, of the casing, hung upon trun- This transfer of the feeding apnions and provided with tWo feed-openings,

.or washers encircling the bolts outside the casing, and the r0d for operafing the turningplate to adjust the stone, whereby t-he stone may be adjusd toward or from the running stone, and is free to yield t0 conform thereco. In testimony whereof I have hereunto sub scribed my name.

AUSBERT H. WAGNER.

Witnesses:

W. H. GREGORY, WM. J. PEYTON.

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