US746275A

US746275A - Grinding-mill.

Info

Publication number: US746275A
Application number: US8431001A
Authority: US
Inventors: Jay C Bowsher
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-12-02
Filing date: 1901-12-02
Publication date: 1903-12-08
Anticipated expiration: 1920-12-08

Description

No. 746,275. PATENTED DEC. a. 1903.

J. 0. BOWSHBR.

GRINDING MILL.

APPLICATION FILED DBO. 2, 1901- I I0 MODEL. 5 SHEETS-SHEET 1.

WW 0 k/m M PATEN'IED DEG. s, 1903;

No. 746,275. v

' J. G. BOWSHER.

GRINDING MILL. I APPLIGATION FILED DEG. 2,1901.

5 sums-sum z.

170 MODEL.

Tun nonms PETERS o0. Pncn'uu'mdu WASHINGTON, n. c

No. 746,275. PATBNTED DEC. 8, 1903.

J. G. BO-WSHER.

GRINDING MILL.

APPLICATION FILED 1330.2, 1901.

NO MODEL. 5 SHEETS-SHEET 3.

(AMY A I 5mm? z dnwwq No. 746.275. .PATENTED DEG.8,1903.

J. G. BOWSHBR. GRINDING MILL.-

APPLIOAT ION PILED'DEO. 2, 1901. I N0 MODEL. 5 SHEETS-SHEET 4.

No. 746,275. PATBNTED DEC. 8, 1903. J. 0. BOWSHER.

. GRINDING MILL.

APPLIUATION FILED 13110.2, 1901.

N0 MODEL. 5 S HEET SSHBET 5.

y MMZQ Q I I W g No. 746,275.

UNITE STATES V Patented December 8, 1903.

PATENT OFFICE.

GRINDING-MILL.

SPECIFICATION formingpart of Letters Patent No. 746,27 5, dated December 8, 1903.

Application filed December 2, 1901. Serial No. 84,310. (No model.) I

To alfiwhom. it may concern: 7 Be it known that I, JAY C. BOWSHER, a citizen of the United States, residing at South Bend,'in the county of St. Joseph and State of Indiana, have invented certain new and useful Improvements in Grinding-Mills; and

thereon, which form. a part of this specifica--' tion.

My invention relatesto improvements in. feed-mills, and has particular relation to machines in which the husk, cob, and grainare ground together.

I The general object of my invention is to provide a machine especially adapted for grinding Kafir corn or maize and inwhich the nnhusked ear is fed into the mill, being subjected successively to'mechanisinwhich will first cut and remove, the husk and fine matter forming the head 'of Kafir corn, break up the cob, and finally grind the comminuted particles'to the desired degree of fineness... The ground material is then passed into a suitable'bin arranged below the mill.

The grinding of Kafir corn and coarse material, such as ordinary maize, before it has been husked is a somewhat difficult matter, owing to the'nature of the material to be operated upon. The advantage offdispensing with an independent husking is readily understood there being not only a saving of time, but also the additional presence of the husk in. the final product. So far as I am aware this result has not been obtained-with this class of machines, and itis to produce a mill for this purpose that the present invention is provided. I In accomplishing'this result it is necessary that not only is there a requirement of mechanism for performing the several steps above referred to, but that.

there must he provided means for adjustably controlling the relative positions of the several parts in order that there may be proper division of the work in theseveral steps to finally produce the desired result so far as the fineness of the material is concerned.

A further object therefore is to provide ration of the same.

special means for adjustahly controlling the relative positions of the acting parts.

A further object is the provision of special mechanism for breaking up the cob; and,

finally, the object is to provide detailed constructions which cooperate to produce the steps above referred to.

To these and other ends, the nature of which will be hereinafter readily understood as the invention is pointed out, said invention consists in the improved c'onstr-uction and combination of parts for accomplishing the above-mentioned objects, as hereinafter .fully described, illustrated in the accompanying drawings, and particularly pointed out in .lthe appended claims.

In the drawings, Figure 1 is a vertical sectional view of the mill. Fig. 2 is a horizontal sectional view taken on the line 2 2 of Fig.1. Fig. 3 is a horizontal sectional view taken on the line 3 3 of Fig. 1 looking in the direction of the arrow. Fig. 4 is a horizontal sectional view taken on the line 4401* Fig. 1. Fig. 5 is a similar view on the line 5 5 of, Fig. 1. Fig. 6 is a detail view of the rotating grinding-cone; Fig. 7 is a detail view of the squaredriving-shaft which" carrice the grinding-cone. Fig. 8 is anend ele- Fig. 9 is adetail view of the spiral crusher and showing the cutting plate secured thereto. Fig. 10 is a detail view-of the shearing-cutters and the keeper carried by the rotating cutter, these parts being. shown separated. are detail views'of the adjusting mechanism.

Fig. 14 is an enlarged sectional v'iewtaken at right angles to Fig. l. I

5 designates a base-plate secured in suitable manner over the box or bin 6, the latter being of suitable size and construction. Projecting from the upper face of the base-plate 5 are a series of pins 7,.forming shafts for gear-wheels 8, the latter being arranged ina circle around and adapted to mesh with a ,pinion 9, carried by the central shaft 10'. As shown in dotted lines in Fig. 2, there are three gear-wheels 8. Each of said gear-wheels 8 is provided with a pinion 11, preferably Figs. 11, 12, and 13 formed integral therewith, said pinions be ing adapted to mesh with a master or bull wheel 12. The shaft 10 is preferably square in cross-section excepting at its lower end, i

where it is stepped into the base-plate, and as the pinion 9 is provided with asquared opening it will be readily understood that a movement of the master or bull wheel 12 will communicate a rotary movement to the shaft 10.

13 designates a circular plate which rests on the upper ends of the pins or shafts 7, to which it may be secured, and of a size adapted to extend over the teeth of the masterwheel 12, said plate serving to hold the gearwheels 8 and master-wheel in position. Projecting upwardly from said plate is an annular flange 14, while the central portion of the plate is cut away, as shown at 15, and intermediate of the flange 14 and said cut-away portion are arranged suitable openings 16, adapted for the passage of the ground material to the box or bin 6. Mounted on the shaft 10 is a semispherical portion 17, from which project laterally wings 18, the latter being adapted to sweep over the surface of the plate 13 Within the flange 14, the space between said flange 14 and the portion 17 forming a collecting-chamber for the meal as it comes from the grinding mechanism.

19 designates the grinding-shell, which is secured to the upper surface of the flange 14. Said shell is flared, as shown, having on its inner surface a suitably-arranged grindingface, the latter being of any preferred construction.

As shown in Fig. 1, the shaft 10 is substantially short, extending but a short distance above the portion 17. The upperend of said shaft is adapted to fit Within a squared opening 20, provided in the lower end of a square driving-shaft 21, as shown in Figs. 7. and 8. The lower end of the shaft 21 is provided with projecting lugs 22, (shown in Figs. 7 and 8,) adapted to eoact with similar lugs 23, formed on the under side of the grinding-cone 24, said cone being mounted on a rounded portion 25 on the shaft 21, as shown in Figs. 1, 7, and 14.

The upper end of the shaft 21 is round and provided with screw-threads arranged close to form a fine adjustment with the lower end of a tubular regulating-shaft 26, the latter extending vertically and having at its upper end a feather 27, adapted to rest within a slot 28, formed in the sleeve 29. Said sleeve is adapted to pass over the tubular shaft 26, being supported thereon by means of the spring 30, as shown in Fig. 1. The upper end of said sleeve is notched or serrated, as shown in Fig. 12, and adapted to form a lockingseat for a pin 31, projecting laterally from the upper end of a rod 32, the latter extendng through the sleeve 29, the tubular shaft 26, and the shaft 21, each of these parts being provided with a longitudinal opening for the passage therethrough of said rod. Said rod has its lower end screw-threaded, by means of which the nut 33 may be applied thereto. The lower end of said rod 32 passes into the opening 20 of the shaft 21, and the nut 33 is of a size to fit the openingin a manner to prevent its rotation independentof the rotation of said shaft. The upper end of said rod 32 is adapted to receive a hand-wheel 34, the boss of which is provided with recesses adapted to receive the pin 31, the connection being a removable one.

It will be readily seen that the rod 32 will be normally held from rotation by the notches or serrations on the end of sleeve 29, said notches or serrations, however, being sufijciently shallow to permit of the rotation of rod 32 when pin 31 is engaged by wheel 34. The rotation of rod 32 will cause nut 33 to travel up or down, and thereby raise or lower the shaft 21, with the result that the grinding-cone 24 is adjusted to its proper position relatively to the shell 19.

35 designates the crusher bowl, which is bolted or otherwise secured to the shell 19, said bowl being flared, as shown. The interior surface of said bowl is of a rib formation.

40 designates a crusher formed with spirally-extended cutting members and having a steel cutting-plate 41 of suitable configuration secured to its lower face. As shown, said plate 41 is provided with a square opening which is adapted to substantially fit the shaft 21, the cutter and crusher being carried by said shaft, the cutting-plate resting on and coacting with the cutter 39.

The upper end of the crusher 40 is provided with a reduced portion forming a hub arranged to enter an opening in the stationary member 42 of the shearing-cutter, said member having radially-extended wings resting on seats 37, formed on the inner face of bowl 35. The member 42 is prevented from rotating by means of lugs 38 engaging recesses 43, formed in said wings.

44 designates the rotating member of the breakers,being formed substantiallyas shown in Fig. 10, having the laterally-extending wings 45. The hub portion of the member 44 is reduced in thickness and is provided with openings adapted to receive pins46, car ried bythe keeper 47, said keeper being adapted to fit over an angular portion of tubular shaft 26 and by the pin connection with the member 44- prevent relative rotation of the shaft 21 and tubularshaft 26, the member 44 being carried by and rotating with the shaft 21. By this construction and arrangement of parts it will be seen that the shaft 21 carries all of the moving parts and that the degree of closeness to which these parts can be brought is adjustably controlled by the tubular shaft 26, the lower face of which abuts on the hub of the member 44. Thus if it is desired that the cutting-plate 41 of cutter 39, together with the two members of the breakers, are to be brought closer together the keeper 47 is raised and the application of a wrench to the tubular shaft 26 and a tightening of said not will force member 44 downward against member 42 and bring said parts into closer relationship Without disturbing the relative positions of the grindingcone and theshell 19. At thesarnetime said member 44 bearing upon the top of crusher 40 forces the latter down closer against plate 39. During such adjustment the sleeve 29, moving with said-tubular shaft,will not affect the position of the-rod 32, reason of the springthereby-permitting the parts to run freer.

As will be readily seen,all of the active parts Q are, by reason of the location of the nut 33 within the opening 20, carried by said nut, and as said nut is carried by the screwthreaded end of the rod 32, resting on the upper end of the shaft 10, said parts are supported with an adjustable connection therebetween, by the shaft 10. v

An especial feature of thisinvention is the general configuration of the bowl 35. As shown in Figs. 4 and 5, it will be seen that while the crusher has ageneral contour which is circular the bowl 35 is arranged with a curve tangential to that of the crusher, thereby forming on opposite sides a space which gradually decreases to a point of close proximity to the path of movement of the crusher. By this means greater facility is given to the action of the crusherin cooperating with the ribs of the bowl to crush the cob.

48 designates a hopper resting on the bowl 35. Said hopper is provided with a continuous rib 49, arranged spirally and extending from the entrance of thehopper to the point of exit.

In operation the unhusked material is placed in the hopper, and as it passes downward, due to the presence of the continuous spiral rib 49, it is caught up by the member 44 of the breakers, which coacting with the member 42 tears away the husk,as well as the finer particles at the head of Kafir corn. The material then drops into the crusherbowl,where it is moved around under the action of the coacting crusher and bowl until the material is comminuted, finally passing through and subjected to the action of the parts of the comminuted cob as may come in contact with the cutter. As it drops from the cone it passes into the collecting-chamher, from where under the action of the wings 18it passes through openings 16 into the box or. bin 6.

Changes in the form and construction of- ,parts may be made'without departing from the spirit of'said invention in-so far as said changes may fall within the scope of the claims hereto appended.

Having described my invention, what I claim isj com prising a crusher-bowLa rotating crusher, i i crusher, and cutting mechanism independent of said crusher-bowl, and said-grinding mechanism and interposed therebetween.

2. A'mill for grinding unhusked maize comprising crushing mechanism and, grinding mechanism arranged in superposed relation, and cutting mechanism independent of said crushing and grinding mechanism and located therebetween. 1

3. Amillfor grinding unhuslied maize com- 1. A feed-m-ill forlgrinding uuhusked maize Q mechanism located below said prising crushing mechanism, grinding mecha'nism located below the same, cutting mechanism independentofsaid crushing and grind ing mechanism and interposed therebetween, and breaking mechanism located above said crushing mechanism. 7

4. Amill comprising a drive-shaft formed of upper and lower sections resting oneupon the other, a grinding-cone carried by one of said sections, and means for adjusting the sections of said shaft relatively to each other, whereby the grinding-cone may be moved longitudinally of the shaft.

.5, A mill comprisinga grinding-cone,an adjustable support therefor, a grinding-shell, crushing mechanism located above said grind-- ing cone and shell, cutting mechanism ar-" ranged below and breaking mechanism arranged above said crushing mechanism, and means for adjusting the relative positions of said breaking and cutting mechanisms.

6. .In a feedmill, a drive-shaft, a hollow shaft telescoping therewith, a grinding-cone mounted on said hollow shaft, a rod extending through said hollow shaft and resting upon said drive-shaft, a nut carried by said rod and too adapted to support said hollow shaft, and.

means for rotating said rod to adjust the position'of said nut. L

7. A feed-mill comprising a drive-shaft, a

tubular shaft provided with an enlarged head arranged to receive one end of said driveshaft, a grinding-cone mounted on said tubular shaft,an adjusting-rod extending through said tubular shaft, and a nut carried bysaid rod.

8. A feed-mill comprising a drive-shaft, a tubular shaft, having its lower end provided with an enlarged head adapted to receive one end of said drive-shaft, lugsprojecting from said head, a grinding-cone mounted on said tubular shaft and also having lugs coacting with said former lugs, an adjusting-rod extending through said hollow shaft and resting on said drive-shaft, and a nut located within said head and working on said rod.

9. A feed-mill comprising a drive-shaft, a tubular shaft engaging said drive-shaft and end, a stationary breaking member located near the upper end of said bowl, and a driveshaft having a crusher, an independent cutting-plate secured to said crusher and a breaking member adapted to cooperate respectively with said bowl, cutter, and stationary breaking member.

In testimony whereof I aifix my signature in presence of two witnesses.

JAY O. BOWSHER.

Witnesses:

JAMES DUSHANE, EDWARD F. DUBAIL.