US88241A - of richmond - Google Patents

Description

W. W. WAIT.

.N4 PETERS, Pham-Lithograph", wnsmngmn, D. C.

-at its lowest point.

ttitittl gieten @tithe @sind W.' WAI'IHOF RICHMOND, INDIANA.

Letters Patent No. 88,241,..1ated Ma/rch 23, 1869.

IMPROVEMENT IN FAN'NING-MILL.

The Schedule referred te in these Letters Patent-and making part of the nme.

To all whom it rfm1/ 1] concern I v Be it known that I, W. W. WAIT, of thecity of Richmond, and State of Indiana, have invented new and useful Improvements in Fanning-Mills; and I do hereby declare that the following is a full and exact description thereof, reference being had-to the accompanying drawings, making a part of this specification, in which- Figure 1 is a transverse section,

Figure -2, a longitudinal section, and

Figure 3, a plan view of the shoe.

The same letters in'the different figures relate to corresponding parts of the mill. My invention comprises three particulars in the construction of tanning-mills, one of which consists inthe arrangement and operation of a jarring-lever bywhich the lower screen of the mill receives a motion at its lower end independently vof the motion of the shoe.

A second improvement relates to an eccentric situated on the fan-shaft, from which the'shoe receives one Aof its motions. The other improvement relates to a pe-` euliar construction of a grain-board, over which the grain hows from the hopper to the screens.

To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings.

The peculiarity of the lever a, iig. 1, as applied to fannng-mills, consists in its operation on a fulcrumpin, and in the manner of changing'the fulcrum, so that the lowest point in the stroke of .the jarring-end ofthe lever will be the same when the fulcrum is at Vdifferent points along the lever, by means of which the screen is' always in contact with said lever, and knocking together of the. two is thus prevented.

The lever cis attached to the 'cross-piece' D bythe holes for a corresponding purpose in the cross-piece v D are arranged on a parallel line to lever a, when the latter is in a position with the end beneath the screen Thus the motion of that end of the lever is always from a given point upward.

fr is a plate supporting pin G', which plate is held by another pin, for the accommodation 'of whichl latter, a row of holes is provided in crossfpiece D, parallel to the holes for pin C. I

g represents the lower screen, the lower end of which rests on the end of the upright section of lever c, and extends over-the board It", by which the grain is carried down and discharged in front of the mill.

The upper end of screen g is supported on pivots attached to its sides, and resting in notched plates t at each side of the shoe. Said screen thus has Vthe combined motions of the shoe and of the lever a i111- parted to it.

b represents theA eccentric situated on the fan-shaft J, by which the rod c, shown in iig. 2, is actuated.

The latter has a bearing, n, attached to 'the side of the mill, on the inside, in which it slides, and is connected with the shoe bymeans of a. link,- c, attached to'said shoe in a flexible manner. The shoe is suspended at the rear by rods in the usual manner. v

Itsfront end is supported by an arm, u., shown figs. 2 and 3, having a slotted plate, s, at its end, which latter is pivoted on a pin inserted. vertically through cross-piece B, the plate s being held in a mortise on the under side of said cross-piece. y

The shoe is thus susceptible of a circular` motion,

which is imparted 'to it by the combined action of theA bell-crank and eccentric b, the former of which operates as in ordinary mills, and tends to shake the shoe ina transverse direction, while thefaction of the eccentric'isin a longitudinal direction.

I, shown. in g's. 2 and 3, represents the improved grainboard for use in further cleaning after the chad has been separated from the grain, which is held'in the upper grooves of the shoe, and over which the grain passes from the hopper to the screens.

My improvement in said board consists in forming divergent channels, as shown in lig.- 3, by means of partition-strips t t, 85e., on which latter is another,

narrower board I', shown in iig. 2, the purpose of said improvement being to regulate and prevent an excessive vquantity of grain4 from passing over said board,

and, by means of the diverging channels, to deliver the ,l grain. evenly to the screens.

When the mill is used for separating the chaff from the grain, board I is reversed, with its underside (which is plain,) upward.

, Having thus fully described my said invention, :What -I claim, and desire to secure by Letters Patent, isl 41. 'lhe lever a, operating on a fulcrum-pin, and so arranged that the latter may be changed to different point-s for the purpose of increasing or diminishing the action of said lever on the screen, without changing .the` lowest point in the levers motion, substantially as set forth.

2. The eccentric b'on the fan-shaft J, and rods c and e, for the purpose'of giving an end shake to the shoe, substantially as set forth.

3. The grain-board I, provided with the divergent partitions, and the board I', as set forth, and for the purpose described.

W. W. WAIT.

Witnesses:

JOSEPH RIDGE, J. A. McMnAns.

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