USRE719E - Improvement in grain separators - Google Patents

Description

UNITED STATES PATENT (ii'iirtliiir JOHN R. MUFFIT'I, OF PIQUA, OHIO.

IMPROVEMENT IN GRAIN SEPARATORS.

Specification thrilling part of Letters Patent No. 18,761, dated December 1, 1857; Reissue No. 719, dated May 17, 1859.

To all whom it may concern:

Be it known that I, JOHN It. MOFFITT, of Piqua, Miami county, Ohio, have invented a new and useful Improvement in Grain-Separators; and I hereby declare the following to be a full and exact description otl the same, reference being had to the annexed drawings, making part ot' this specification.

The subject ot' my inventionl consists in an arrangement within an open straw-carrying apron otl disconnected driving-pinions or chain-gears free from any connecting-shaft around which the straw can wind.

In the accompanying drawings, Figure l is a longitudinal section of the machine. Fig. 2 i; a transverse section at. the line .fr nr, Fig. l. Fig. 3 is a longitudinal section ot' the lower endot the straw-carrying and grain-separating apron. Fig. 4 is a top view of the same.

A is the frame ot' the machine, and may be mostly of wood.

B is an open continuous apron carried by a pulley, l), at the ripper end, and by a pair of driving compound gears,E e E e', at t-he lower end, hereinafter more particularly described. The apron may be constructed substantially as described in my patent ot' November 3U, 1852-that is to say, composed of two chains united by slats at suitable intervals, permit ting the descent ot' the grain, and conveying oft' and discharging the straw at the rear of the machine. Each link is provided with-a tooth, b. These teeth, meshing with the chain` gears E and E enable the propulsion of the apron by said chain-gears. This mode of propulsion causes the apron to be quite slack at its upper or advancing side, which is thus adapted for violent agitation at each impact of the teeth b with the rollers F. St-udshafts H I-l, projecting inwardly from the sides of the frame, support compound pinions or chain-gears E e E c', whose pinions e e mesh with and are driven by spur-wheels I 1 on the beater-shaft c. The other members, E E', constitute chain-gears which mesh with the carrier-chains B B. rIhis plan of con struction completely and successfully supersedes the necessity ot' any shaft extending across the interior of the carrier from pinion to pinion, which shaft, when so extending, is extremely liable to become clogged by the winding around it by straw and other trash.

Instead, however, ot' being driven from the beater sh'att, the two chain-gears may be driven by two bevel gear-shafts gearing directly to the main shaft; but whatever m echanism is employed must be positive, and must proceed from a single motor, that there may bean exact uniformity otA action between the two chain-gears.

13 (represented by red lilies) are sections ot' the carrying-apron, consisting of one, two, or more links, which, being attached by but one edge, simply rest upon the main portion of the chain, so as to form a continuous slat surface on the advancing` or upper side of the apron, but on the return motion fall by their` gravity until they reach the chute-board. C, by which they are supported until they approach the driving chain gear ln e E e', where, escaping from the chute-board, they suddenly drop, and thus liberate the straw and trash that have accumulated within the apron, the liberation taking place where the straw and other matters most accumulate. But most ofthe trash which thus collects is so very light that it is unable by its mere gravity to drop through the ventage thus provided during the necessarily brief periods ot' the passage ot the loose sections under the place of accumulation. I have therefore provided within the space between the upper' and the lower portions of the apron, and extending parallel to and ot" nearly equal length with the slats, a rotating beater, A, which, moving with acousiderable velocity, effectually ejects the extraneous matters which, when permitted to accumulate, very soon clog the driving mechA anism ot' the apron. The grain and other matters which `fall through the apron onto the chute-board (l are conveyed thereby to the shoe G, entering that part ot` the machine in company with the matters which escape through the falling sections of the apron.

The operation of the falling sections and beater is as follows: At the upper or advancing part of their motions the sections B" remain closed by their own weight, forming a continuons conveyer for the straw; but after passing over the pulley D they are supported by the chute-board C until, in their return motion, approaching the lower end ot' the apron, where the greatest accumulation of matter takes place, they escape from the chtiteboard; and at this point the beater A, rotatfromits lower end,whilepermitting` the escape inf.;` in theA direction indicated by lche arrow, of the straw through theV lower openings of operates in connection with the falling section the apron7 as set forth.

and' ejectually removes any such accumula In testimonv otwhich invention l hereunto tion. set my hand. Y I claim asnew and of my invention herein- The arrangement of disconnected shafts H H, carrying pinion chain-gears E e E cf, ro- 'Titnesses:

J. R. MOFFITT.

tated at equal speeds from a single shait or GEO. H. KNXGHT,

driver, and acting to drive the endless apron Oo'ls. KNIGHT.

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