US577117A - William seburn - Google Patents

Description

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vW. SBBURN.

PNEUMATIG srmw suona.

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I A 2 SheeltsL-Shet 2. W. SEBRN. PNEUMATI STRAW STAKER.

Ne. 577,117. Peeeeeed feb. 16, 1897.4

:UNITED .STATES PNIILN'r OFFICE.

lVILL-IAM .SEBURN, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THIL` INDIANA l .MANUFACTURING COMPANY, OF SAME PLACE.

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SPECIFICATIONif r'n :1.ing part of Letters Patent No. 557,117, dated February 16, 1897.

` .Application iilerl lune 20, 1896. Serial No. 596,235. (No model.)

To all whom t may concern? l Be it known that I, WILLIAM SEBURN, a citizen of thc-United States, residing at Indianapolis, in the county of Marion and State `of Indiana, have invented certain new and useful Improvements in. Pneumatic Straw- `Stackers, of which the following is a specilication. This improvement relates to fans for pneu- Io matic straw-smokers g'and' it consists oi' an attachment whereby the stravand 4chaff are preventedfrom entering that portion of the Vfan-casing occupied by the fan-blades when (in the 'line of travel) they are farthest from I5 the discharge-orifice, and thus a large proportion of the labor otherwise thrown upon the fan-blades obviated, 'and consequently much lesspower required to drive the fan.

This invention is especially applicable to 2o machines like that shown in Letters Patent No. 51t0,102, dated May 2S, i895, issued upon the application of Thomas Kirshman, and

No. 493,734, dated March 2l, 1893, issued upon the application of Joseph W. Nethcry. I have illust-rated said invention in connection with a straw-stacker of the Kirshman type, to which I have practically applied it. Said invention is also capable of advantageous use with most of the pneumatic straw-stackers 3o now in use, of which I believe'that illustrated i by the Buchanan patent, No. 467,476, dated January 19, 1892, to be the first practical example. T o adapt this invention to any of Y these various Atypes of straW-staekers would 3 5 obviously' generally only require mechanical skill, and therefore au illustration and description of a single example, as applied to the Kirshman machine, is deemed suiiicient. Referring to the accompanying drawings,

4o which are made a part hereof and on which similar letters offreference indicate similar parts, 'Figure l is a perspective view of .the rear end of a threshing-machinewith .a pneu- Inatie straw-stacker of attached thereto; Fig. 2, a view of the interior orinner side of the -front portion of the fancase as seen from the dotted line 2 2 in Fig.

3, being such a view as would be presented in looking into the rear of the machine if the 5o outer portion of the fan-case and the fan ,it-

self were removed 5 Fig. 3, a vertical sectional the designated typev view as seen from the dotted line 3 Sin Fig.

2; Fig. 4, aperspeet-ive view of the shield or deleetor which is the essential -feature of my present invention, and Fig. 5 an inside view 55 looking outwardly from the threshing-ma'- chine toward the fan structure provided with or embodying my invention.

In the said 'drawings the portions marked A represent the fan-casing, `llthe fan-shaft, 6o and (J the shield or deflector, which latter is the principal feature of my present invention.

The fan-easing A is of a suitable form and carries a bearing a for the fan-shaft,.whieh bearing preferably includes in its structure a dish-shaped part, as shown most plainly in Fig. 3, whereby the bearing is carried in toward the center of thefan structure, and the central space is also partially occupied, thus reducing the air-space at that point, which is 7o deemed to be an advantage. y

The fan-shaft 13 is mounted in the bearing a and is driven by a belt, asV plainly shown in Fig. l, or otherwise, and carries on its'inner end a hub having fan-blade arms, on the' outer 75 ends of which the fau-blades Bare Inorl'nted, and'has also extending over its end, preferably, a disk or plate p. I speak in this specification of the position of the fan-blades when farthest along J[he path of travel from the 8o discharge-orifice. This of course refers to the position of said blades shortly after they have passed the orifice and while yet actually near thereto; but they are at the most distant y point in, thesense of having to travel the greatest 'distance in the direction in which, ast-he fan is organized, they must move.

The shield or deflector C is secured upon the'innerside ofthe casing A, as plainly shown in the drawings, and is preferably dish- 9o shaped'or in form substantially of a portion of an ordinary tin pan and extends in close to, but not quite in contact with, the plate or disk p. lIt-covers about one-third of the orifice or eye of the fan and incloses the portion 9 5 containing the fan-blades when farthest,

measured along-the path of travel, from the discharge pipe or orifice. Being positioned and shaped in this manner, it'shts off the ingress of any straw, dust, or ehaf-laden air 4x oo into this particular portion of the fan-casing,l and .thus relieves the blades of the fan carrying such straw, dust, or chaff aroun'd'lfor a considerable portion of the circumference of the fan-casing, which obviouslymuch'lreduces the labor to be'performed by theiau-blades, 5 and consequently the power required to drive the fan. This also obviates any tendency on the part of the material to pil/e'up and clog the fan at the lower portion. The inclined shape of this shield' or defiect'or aids also in t a guiding the straw and chaff into/@iat portionlv of the fan to which it is desired to direct it. Being dish-shaped, 'as shown, the fan -eye opening at the place of the fan-Casin g side is f lngt, materially reduced, so thatthe same quan- ,v 'ity of material may enter the fan-eye as t ough such shield or deliector were not pres. "ent,-but thev same i's drawn sidewise toward theide' of the fan-easing opposite from said shieldor 4detlec't'or and below the plane of the yzo` side of the valve-casing. By this construcf. tici; and arrangement the-capacity ofthe fan I ,is not materially reduced, while the power required to drive the same is verymuch lessened.

- Having thus fully described my said invention., what I claim as new, and desire to secure byLettersiPatent, is-

l-. The combination ,y with an exhaust-fan, of a shield or deflector, dish-shaped in form, and secured within the eye of the fan, and extending inwardly toward the shaft in aninclined direction, thus covering or inclosing that portion of the fan-casing'in which the ,blades when farthest on thepath of travel fan-blades revolve while farthest on the path of travel from the discharging orifice or chute. 3 5 2. The combination, in a pneumatic straw elevator and stacker, with the fan thereof, of

an inclined dish-shaped shield or deflector covering'or inclosing that .portion of the fancasing within which the blades of the fan are 4o `situated when farthest on thepath of travel from the discharge-orifice,whereby the iniiogf-b ing material is prevented from coming in contact with said blades at said point, substantially as and for the purposes set forth. 3. A fan for pneumatic straw-stackers, the casing whereof is providedvwith a portion C' extending acrossand closing a segment of the fan-eye at that side of the fan occupied by the from the discharge-orifice.

4. The combination ina fan for pneumatic straw-stackers, of the fan-casing Ai'fanfshjaft B provided with the usual fan arms and wings, a plate p, and a shield or deector C secured A to the casing and covering a portion of thefaneye, saidfshield or casing being dish-shaped I and extending down to near said plate. l

In witness whereof I have hereunto set my hand and seal, at Indianapolis,-.Indiana, this 6o 26th day of May', A. D. 1896.

lVIlLiIIAllI SEBURNR Witnesses:

CHESTER BRADFORD, J AMES AJYAALSH.

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