US587688A

US587688A - Grinding-mill

Info

Publication number: US587688A
Authority: US
Publication date: 1897-08-10
Anticipated expiration: 1914-08-10

Description

2 Sheets- Sheet '1. M. I. ABBE. GRINDING MILL.

(No Model.)

No. 587,688. Patented Aug. 10,1897.

THE NORRIS Pzrins cor. PKOTO-LIYNO wasnwsrss n c 2 enemy sheet 2. M. F. ABBE. GRINDING MILL.

(No Model.)

Patented Aug.'10,1897

- fnrenlor M M v (Luau/3W Wzlnesses W @W AZZW THE scams Pans co. mowg'u'ma. wasvmemn, a. c..

UNITED STATES PATENT OFFICE.

MAX F. ABBE, OF BROOKLYN, NEW YORK.

GRlNDiNG-MiLL.

SPECIFICATION forming part of Letters Patent No. 587,688, dated August 10, 1897.

Application filed April 1'7, 189?. Serial No. 632,631. (No model.)

1'0 all whom, it may concern.-

Be it known that I, MAX F. ABBE, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Grinding-Mills, of which the following is a specification. v

This invention relates to a grinding-mill of improved construction and designed for reducing spices, sugar, fertilizers, and other substances.

The mill is of the class described in Patent No. 496,677, granted to R. IV. F. Abbe May 2, 1893, and is constructed with a view of effecting a ready inspection and adjustment of the parts, insuring a thorough reduction of the substances to be ground and providing various improvements in the details of construction, all as hereinafter more fully pointed out.

In the accompanying drawings, Figure 1 is a vertical central section of my improved grinding-mill on line 1 1, Fig. 2. Fig. 2 is a plan; Fig. 3, a horizontal section on line 3 3, Fig. l, with the shell-section I) removed.

The letter 0. represents the annular baseplate of the mill provided with an inner concentric flange a and a central step-bearing a Upon the ring a there is supported the divided shell of the mill, which is made in two sections 1) I), each of semicircular form. The sections 1) b are attached to the ring a by the vertically-swim ging bolts bflwhile the sections 1) Z) are attached to one another by the horizontally-swinging bolts b To the upper flange of the section b,which I term the fixed section, there are secured by bolts 0 the outer ends of three (more or less) radial arms 0, which at their center form the bearing 0 of the upright work-shaft d, that projects with its lower end into the step a The two outer arms 0 form an obtuse angle at the bearing and thence extend to the ends of the fixed section I), while the inner arm a bisects or subdivides the angle formed by the outer arms, Fig. 2. Within the step a the shaft (1 is supported by two (more or less) bearings d, which are vertically adjustable by set-screw (P, by means of which the shaft may be vertically raised to regulate the fineness of the powder. The upper end of the shaft (7 is provided within the bearing 0 with a collar or enlargement d turning in a sleeve 0 while the base-plate of the bearing a is flanged, as at 0 beneath such collar. In this way the bearing constitutes in effect an oilcup, which will prevent the lubricant from running down the shafting and mixing with the substances to'be ground. It will be seen that the'shaft d is supported at its upper end solely by the fixed section b of the shell, while the section b, which I term the movable section, does not take any part in supporting the shaft-bearing. In this way the section I) may be at any time readily unbolted and removed to open and inspect the mill without disturbing any of the bearings or driving parts of the machine.

Upon the inner flange a of the base-ring a there is supported a fixed annular grindingplate e, made with two (more or less) concentric corrugated grinding rings or concaves e 0 while at its center it surrounds a tubular bearing f, that receives shaft d and projects into the step a Above the plate e there is secured to shaft cl the hub g of a revoluble receiver 9, into which the material to be ground is fed from the hopper or inlet-pipe h, secured to fixed section Z). The receiver 9 is composed of an upright flange g placed concentric to shaft cl, a horizontal body and a downwardlyinclined flange g which terminates atapoint between the inner and outer concaves ee of the base-plate e. The receiver g is formed with four (more or less) radial arms i, made integral therewith and projecting from hub g to a point beyond the flange The arms 1; thus serve to secure the receiver g to the shaft d, and they likewise serve for the attachment of the grinders or beaters 4 11 which are bolted within slots of the arms. The

beaters t" t are placed within and beyond the duct the powder to the outer grinders and prevent the same from scattering. Upon the edge of the plate e there is secured the circular screen j, through which the powder falls into an annular chamber or hopper A between the parts 6 b b, to be thence conveyed to a suitable storage receptacle or bin. A number of stops 70 7t, made in the form of plates or fingers, depend from the roof of shells b 1) within the screen j. These stops prevent the air-current from deflecting the powder from its radial direction, and thus insure its forcible ejectment through the screen.

The air drawn into the machine is admitted through an air-inlet pipe Z, secured to fixed section b and controlled by a valve Z.

It will be seen that in my improved grinding-milla full inspection of the machine may be readily effected without disturbing any of the operating parts thereof. The mill feeds, grinds, and screens the substances quickly, thoroughly, and uniformly, so that a very satisfactory and even resultis obtained. The

usual or average speed of operation is abouttwo thousand revolutions per minute.

concaves with a central. shaft, a receiver secured thereto and havinga set of radial arms and heaters secured to said arms, the receiver being provided with an inclined flange 9 within the outermost set of beaters, substantially as specified.

2.. In agrinding-mill the combination of a grinding-plate having concentric annular concaves, with a shaft, a receiver having upright flange g and inclined flange g, a set of radial arms 2', projecting beyond the flange g and two sets of heaters secured to the radial arms within and beyond the flange g, respectively, substantially as. specified.

Signed at New York, in the county of New York and State of New York, this 13th day of April, A. D. 1897.

MAX F. ABBE.

\Vitnesses:

F. v. BRIESEN, WILLIAM SoHULz.