US83574A - Improvement in grist-mills - Google Patents

Description

' B. WHITNEY.

Grist Mill,

Patented Oct. 27, 1868.

N PETERS. Films-Lithographer. Wnshingio'n D. c.

hi3! gisiw Mim the. WWW

BENNET WHITNEY, OF NEW BRUNSWICK, JERSEY. Letters Patent No, 83,574, dated October 27, 1868.

IMPROVEMENT IN GRIST-MILLS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, BENNET WHITNEY, of New Brunswick, in the county of--Middlesex, and State of New Jersey, have invented a new and useful Improvement in Grist-Mills; and I do hereby declare that the following is a full, clear, and exact description thereof,

which will enable others skilled in the art to make and use the same, reference being had to the accompanying taken on the plane of the section y y, fig. 1.

Figure 3 is a detail front view of the upper part of the same.

Figure 4 is an inverted plan view of the lower revolving stone.

Figure 5 is an inverted sectional horizontal view of the same, taken on thcplane of the line z z, fig. 2.

Similar letters of reference indicate like parts.

The object of this invention is to so construct a gristm'ill that the upper stone will be allowed to swing in either direction, and can at the same time be adjusted up and down; that no meal can escape through an upper opening in the curb; that the whole mechanism can be easily taken apart, without disturbing the bottom of the curb; and that the hopper and its shoe can be arranged on either side of the mill, as may be desired.

The invention consists, first, in hanging the upper stone, by means of two trunnions, in two bars, which are up-and-down adjustable, on a plate, which is also up-and-down adjustable, by a nut, working on a fixed vertical screw, and which plate can swing somewhat on that screw. The upper stone is thereby made upand-down adjustable, as well as swinging.

The invention consists, second, in suspending the shoe, by means of straps, from bars, which are reversible on the frame of the mill, and in supporting the hopper on the same bars, so that the shoe and hopper maybe arranged on either side of the machine.

The invention, finally, consists in the use of an elastic band or hose, interposed between the upper stone and the curb, to prevent meal from flying out at the top.

A, in the drawing, represents the frame of my improved mill, made of wood, cast-iron, or. other suitable material, of suitable form and dimensions,

The frame has a step, a, formed on it, for; the sup: port of the'spindle B. j

G is the curb, i. 0., a cylindrical shell, supported on the frame A, and surrounding the lower stone D, and the lower part, at least,.of, the upper stone E.

F is an annular plate, fitted into or, to the lower part of the curb, below the lower stone D, as shown in figs. l and 2. v

It has an upward-projecting flange, b, at its inner edge, so as to form an annular trough, for the reception of the meal.

This trough has an aperture, 0, through which the meal can be discharged.

The lower stone has a polygonal central apertiu'e, whichis filled by a metallic box, (I, through the conical aperture of which the conical part of the spindle fits loose, sop-s to support the stone.

Fromthe spindle project two lugs or pins, 0 c, which fit into notches provided in the box al.

The stone, D, is, by means of the pins 0, carried round with the spindle.

On the under side of the stone, D, are fitted projecting arms f f, which are either parts of a plate, G, or

are otherwise attached to the stone, so as to project into the trough. These arms, as they revolve with the stone, 1), clear the trough, and sweep the meal into the aperture 0, to thereby convey it to a suitable receptacle.

Between the upper stone, E, and the curb 0 there is interposed an elastic hose, or an elastic band or wall, H, which prevents the meal from flying out on top,

and which still permits the saidupper stone to swing.

I is. a vertical pin, fitted, stationary, through a horizontal plate, g, of the frame, above the upper end of the spindle. That'part of the pin I which projects above the plate g is provided with a screw-thread, but its loose end is not.

On the upper end of the spindle B is secured a metal box, J, with a socket in its upper part, for the reception of the lower end of the pin 1. As the spindle is revolved, its upper end is thus guided on the fixed pin I.

The plate 9 is, at its ends, bolted to the uprights of the frame A, as in fig. 1, so that it can be readily re moved, to allow the removal of the spindle and stones.

The box J is of irregular, polygonal, or other camshape, for the purpose of shaking the shoe K.

The upper stone, E, is provided with two projecting pins h, which are in line with each other, and which are fitted into the lower ends of two vertical bars, '1. i, which,-passing through openings in plate g, are suspended from a horizontal bar or plate, L, as in fig. 1.

The bars i are slotted, and bolted to the ends of L, so as to be up-and-down adjustable thereon.

The bar L has a horizontal slot, into which a nut, j, is put, that works on the screw I, the body of the bar L being also fitted around the screw I, but so that it can swing thereon, the apertures through which the screw fits being large enough to allow such swinging motion. v

By turning the nut j, the-bar L, and its appendages, ih E, will be upd-down adjusted.

The stone, E, ca also be raised and lowered by adjusting the bars i on L.

The stone, E, can swingon the axis of the pins h, and also, with its frame 3 L, on the pin 1.

M M are two Z-shaped bars, each provided with a hook, I, at the junction of the upper horizontal with the vertical arm, as in fig. 2.

Each of these bars is hung upon the plate 9, on the edge of which are uprightribs m m, to receive the hooks.

The lower horizontal arm of each bar M rests under the plate g, between two ribs, u n, or in a groove formed on the under side of the same.

One end of the shoe K is, by means of straps o o, suspended from the upper arms of the bars M, as in figs. l and 5, while the other end is, by means of a forked strap 1), (fig. 3,) suspended from a pin. r, that projects from one of the bars M. The pin r is removable.

The strap 1) is drawn through an eye, formed on the pin 0', and is then wound around the said pin,.and, finally, clamped between the bar M and a rib, n, as in figstii and 5.

By loosening the strap 1), the height of the shoe, or rather its degree of inclination, can be regulated.

The shoe is slotted, or grooved, or forked, as in fig. 5, and fits around both sides of the cam J, so as to be oscillated by the same, when the spindle B is rotated.

The hopper N is also supported on the bars M, on the upper horizontal arms of the same.

As the bars can be reversed on the plate y, the shoe and hopper, which are or may be solely suspended from them, are also reversible, so that they can be arranged on either side of the machine, as may be most convenient.

Having thus desclibed my invention,

I claim as new, and desire to secure Patent- 7 1. The arrangement of the elastic packing H, interposed between the upper stone E and the curb 0, substantially as and for the purpose set forth.

2. In combination with the stone, E, the .pins h, slotted sliding bars 1', slotted plate 5 adjustable plate I stationary screw I, and nut j, all operating as described, for the purpose of adjustably suspending the stone, E, in the framing, asherein shown and described.

3. The reversible z-shaped bars M, when provided with hooks 1, arranged to support the hopper and shoe ofthe grist-mill, as herein described BENNET WHITNEY.

by Letters Witnesses:

HENRY \VBITNEY, A. M. WAY

Images