US1028793A - Pneumatic stacker. - Google Patents

Description

J. K. SHARPB, JE-

PNEUMATIC STAOKER. APPLIOATIOLi FILED APILZQ, 1910.

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v PNEUMATIC STACKER. APPLICATION FILED APE.29,1910.

Pat ented June'4, 1912.

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UNITED STATES PATENT ormon.

JOSEPH K. SHARPE, JR., OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE INDIANA WEST VIRGINIA.

PNEUMATIC STACKER.

Specification of Letters Patent.

Patented June 1,1912.

Application filed April 29, 1910. Serial No. 558,394.

To all whom it may concern:

Be it known that I, JOSEPH K. SHARPE, J r., a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Pneumatic Stackers, of which the following is a specification.

My present invention relates to improvements in pneumatic stackers of the type which is the subject of my application Serial No. 489,056, andconsists in certain details of construction and arrangements of parts which render such stacker more eflicient and by which I produce results heretofore unattainable.

In the accompanying drawings, which are made a part hereof, Figure 1 is a perspective view of a portion of a pneumatic stacker embodying my improvements; Fig. 2 a plan; Fig. 3 a longitudinal sectional view through a combined stacker and separator, as seen when looking in the direction indicated by the arrows 33 in Fig. 2; Fig. 4

a detail sectional view as seen when looking toward the inner wall of the fan and into the hopper; and Figs. 5 and 6, detail sectional views as seen when looking in the directions indicated by the arrows 55, 6-6, respectively, in Figs. 2 and 4.

In said drawings the portions marked 10 represent a separator, which may be of any suitable construction, to which my improved stacker is attached. Said stacker, as usual, comprises a material-receiving chamber, 11, at the lower end of which is a horizontallyarranged concave hopper, 12, extending transversely of the rear of the separator, and one end of which communicates with a fan, 14, contained in a casing, 15. As shown in my application hereinbefore referred to, said casing 15 has an offset portion, 16, voluted in the direction of the outlet or boot, 17, to the fan. Over this voluted portion 16 I provide a flange by projecting the, end, 18,

of the hopper bottom 12 into the fan casing,

as plainly indicated in Fig. 2 hereof. This construction results in a pocket or air container, and permits of a material lateral expansion of the air blast created by the rotating fan 14 and the retention thereof in said container..

As is well known, the suction intake air current produced by a stacker fan extends but a slight distance into the hopper, and,

therefore, it becomes necessary to provide mechanical means for urging the straw masses into the zone of action of said current, such as inclined hoppers, rotary and endless conveyers, and the like. By my improvements, however, I am enabled to utilize an ordinary concave hopper occupying with the fan the entire rear width of the separator, through which hopper I propel straw and other material to the fan by a portion of the blast produced by the fan. This I accomplish by connecting a conduit or tube,

per. This arrangement I have demon- ,strated to be highly effective for the purpose However, when wet or sticky material (such stated under ordinary conditions.

as corn husks) is being handled a portion thereof is carried by the expanding air to 'said tube 20 and clings to the entrance thereof which soon clogs the same and destroys the efliciency of the tube. To obviate this difficulty I provide a perforate shield, such as wire meshing, 25, in the fan casing, extending the same from the projecting edge of the hopper to the lower interior side of the casing thus forming a partition between said casing and the fan, substantially as indicated in Figs. 4and 5, said shield ter minating at 26 so as to leave an opening be tween its end and the adjacent side wall of until it reaches the opening, 26, where it mingles with the main portion of the discharging material.

I thus produce an effective stacker for handling material under all conditions, and am enabledto utilize any ordinary unobstructed hopper through which an air blast,

produced by the stacker fan itself, is constantly discharged by means of a screened tube or conduit, thus insuring that all material in said hopper will be instantly conveyed to the fan and by which arrangementalso the efficiency of the fan is improved by reason of the means providing for expansion of the air blasts and its vent through said tube 20, which permits undisturbed and regular flow of the air currents, and overcomes back lash or expansion of air out into the hopper, which latter occurrence is a common defect in some types of stackers.

' I claim as my invention:

1. The combination, in a pneumatic stacker, of a hopper, a vertically arranged fan casing communicating with said hopper and arranged at one side thereof, a fan in said casing, a conduit leading from said casing to the side of said hopper opposite to said fan for discharging an air blast therethrough, and means in said casing for permitting an air blast from said fan to discharge through said conduit and for preventing material from entering said conduit.

2. The combination, in a pneumatic stacker, of a hopper, a fan casing at one side of said hopper embodying means for permitting the lateral expansion of air therein, a

fan in said casing, a conduit leading from said fan casing to the opposite end of said hopper for discharging an air blast-from said fan into said hopper, and a partition in said fan casing for permitting the blast from said fan to enter said conduit and for preventing material from entering therein.

In a pneumatic stacker, a hopper, a fan housing having a portion of its peripheral wall voluted and communicating with one end of said hopper, a flange associated with said volute portion to form an air container in said housing, a fan in said housing, and

a perforated shield in said housing between said fan and said air container for separating material from air expanding into said container.

4. In a pneumatic stacker, a hopper, a fan housing having a portion of its peripheral wall voluted and communicating with one said volute portion to form an air container in saidhousing, a fan in said housing, a conduit'leading from said housing to the outer end of said hopper for discharging an air blast through said hopper and toward said fan, and a shield in saidhousing for preventing m'aterial'from entering said conduit.

6. In a pneumatic stacker, a hopper, a fan communicating with one end thereof, a shield in said fan between the wings thereof and a side wall of its casing for separating material from air, a conduit leading from said fan to the outer-end of said hopper, and a nozzle at the end of said conduit for distributing air through said hopper.

7 In a pneumatic stacker, a hopper, a fan casing communicating with one end thereof, a fan in said casing, a flange projecting through a portion of said casing and terminating in proximity to said fan, and a con duit leading from said casing to the opposite end of said hopper for di'scharging an air blast through said hopper toward said fan.

In testimony whereof I aflix my signature in presence of two witnesses.

JOSEPH K. SHARPE, JR.

Witnesses:

F. L. SATTLEY, C. E. SLoAN.

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

Washington, D. 0.

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