US1027206A - Feed-mill. - Google Patents

Description

A. INGRAHAM.

REED MILL. APPLICATION FILED JAN. 29, 1910.

Patented Ma 21, 1912.

2 SHEETSSHBET 1.

. a m .w i p I V o R m m mm. v .2 mm w m In 4 A N 0W UMN w 50 W I O E Z? M u wN WX y m Q 7 o 62 crw. 5 m m 0 4 M 0% w 0 i u N M N\ w N v2 4 M N v m uni 4 mm U 4 3 t\ g W x 9 m M n -N @Q 5 n N r W 2 SHEETfi- SHEET 2.

m/utA/w/P Patented May 21,1912.

FEED MILL.

APPLICATION FILED mmae, 1910.

A. INGRAHZAMQ UNITED STATES TPATENT OFFICE.

ALEXANDER INGR IIAM, 0F MINNEArOLIs, MINNESOTA, AssIoNoR To WILLEORI) MANUFACTURING COMPANY, OE MINNEAPOLIS, MINNESOTA, A CORPORATION OE MINNESOTA.

FEED-MILL.

Patented May 21, 1912.

Application filed January 29, 1910. Serial'No. 540,878.

To all whom it may concern:

Be it known that I, ALEXANDER INGRA- HAM, of Minneapolis, Hennepin county, Minnesota, have invented certain new'and useful Improvements in Feed-Mills, of which the following is a specification.

The object of my invention is to provide a mill in which different kinds of grain can be ground at the same time and mixed after grinding, or one kind of grain may be fed through the first and second break rolls, said rolls being capable of convenient adjustment toward or from one another.

The invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims. 2

In the accompanying drawings forming part of this specification, Figure 1 is an end view of a feed mill embodying my inven tion, Fig. 2 is a vertical sectional view of the same, Fig. 3 is a front View of the mill, Fig. 4 is a detail sectional view of the mechanism for adjusting the rolls, Fig. 5 is a detail View illustrating the means for utilizing the mill to grind different kinds of grain.

In the drawing, 2 represents the casing of the mill having an upper part 3 provided with a hopper 4 to which the material to be ground is delivered through the spout 5.

' This hopper has a feed roll 6 provided with recesses in its periphery, and a slide 7 controlled by a rack and pinion 8 that is operated by means of a crank 9 to obtain the desired adjustment of the slide.

10 represents the side plates secured to the casing 2 and these plates are provided with vertically arranged hollow ribs or webs 11, which are preferably cast integrally with the plates and extend from the top to the bottom thereof, as indicated in Figs. 1 and 4. These ribs extend outwardly a considerable distance from the side plates of the casing and brace and strengthen these plates against the strain of the rolls thereon, and I am therefore able to use lighter side plates than would be necessary if the ribs were omitted. Furthermore, the ribs present broad surfaces to which the roll bearings may be secured, and I am able to use longer bearings than is generally possible in machines of this type, and the bearings being supported by the ribs, the strain is thrust thereon and not directly upon the plates, which would be the case where hubs are provided on the outside of the plates.

The first break rolls 12 and 13 have their shafts 14 and 15 journaled in boxes 16 and 17 on the webs 11, outside the end plates of the casing. The boxes 16 are stationary on brackets 18, while the boxes 17 are carried by arms 19 journaled at their upper ends in bearings 20 on eccentric pins 21 which are capable of rotary adjustment for the pur pose of raising or lowering the boxes 17 and the roll carried thereby. The lower ends of the arms 19 have hubs 22 thereon, 'slidable on rods 23 which are pivoted on eccentric pins 24 on the end plates and project through holes 25 in the ribs 11. Springs 26 are carried by the said rods and adjusting wheels 27 and 28 are mounted on the threaded ends of said rods for the purpose of increasing or decreasing the tension of said springs and moving the roller 12 toward or from the roller 13. Sleeves 29 are interposed between the wheel 27 and the hubs 22 and washers 30 have lugs 31 fitting within depressions in the ends of the hubs 22, the ends of the sleeves 29 bearing on these wash-- ers and holding them in contact with said hubs and forming rocking bearings thereon. Each side of the mill is equipped in a similar manner and by the operation of the wheels 27 and 28 the arms 19 may be oscillated to adjust one roll with respect to the other one. The springs 26 will allow the arms to yield and the rolls to separate when any foreign material passes between them. I

-A second set of rollers32 and 33, which I may designate as the second break rolls, are providedbelow the rolls 12 and 13, an inclined feed board 34 being arranged between them, and these second break rolls are mounted in a similar manner and are capable of adjustment in the manner described with reference to the first break rolls and I will therefore designate the mechanism for operating these rolls by the same reference numerals with the addition of the exponent a. The pin 24 is eccentrica-lly mounted and for the purpose of operating both movable rolls simultaneously, I provide an arm 34 on the eccentric 24 connected by a link 35. with one arm of a bell crank 36 on the eccentric 24 The other arm. of said bell crank is connected by a link 37 with a lever 38 that is pivoted on the front of the machine and normally locked by means of a clamping screw 39. By the operation of this lever the movable rolls l2 and 32 can be adjusted simultaneously through the eccentric construction of the pins 24 and 24*.

The feed board, between the upper and lower sets of rolls, is preferably formed in two sections, 34 and 34, hinged together at a point preferably near the center of the board, and a plate 34 is fastened to one of the sections and assumes the position indicated in Fig, 5 when the board is adjusted, to adapt the mill for hamdling two kinds of grain at once. In this case the plate 34: will extend up to a point near the surface of the roller 13 and prevent any of the material that is fed through. the rolls 12 and 13 from passing down into the rolls 32 and 33. When the machine is used for grinding two kinds of grain, as indicated in Fig. 5, the door in the casing is removed, and a feeder 41 placed thereover in position to direct the grain to the rolls 32 and 33. The material, passing through the two pairs of rolls, will then drop to the bottom of the mill and may be mixed, if desired, after grinding. The driving shaft 42 has a box 43 vertically movable in a guide 414 and operated by means of a screw 45 for belt tightening purposes.

I claim as my invention:

1. A feed mill comprising a casing having end plates provided with vertically arranged hollow ribs, said ribs projecting outwardly from said plates and having openings formed in their side faces, arms having eccentric bearings within said openings, a roll having bearings in said arms, a second roll having bearings on said ribs on the op posite side thereof from said openings, and means for oscillating said arms, for the purpose specified.

2. A feed mill comprising a casing having end plates and vertically arranged hollow ribs formed thereon, said ribs projecting outwardly from said plates and bracing and strengthening the same, said ribs having openings in one of their side walls, arms journaled above said openings and depending therein, a roll having bearings in said arms, a second roll having bearings on said ribs on the opposite side thereof from said first named roll, and means extending through said ribs and engaging the lower ends of said arms to oscillate the same.

In witness whereof, I have hereunto set my hand this 20 day of January 1910.

ALEXANDER IN GRAHAM.

Witnesses:

L. C. CRoNnN, J. A. BYRNES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Images