US1107015A - Dust-spraying machine. - Google Patents

Description

H. D. BABGOGK, F. C. WELLS L J'. W. BROWN.

DUST SPRAYING MACHINE.

APPLICATION FILED JAN.12, 1912.

LWR@ 15, Dat-@md Aug. 11, 1914.

TTORNEYS UNITED STATES PATENT OFFICE.

HENRY D. BABCOCK, OF LEONARDSVILLE, FRANK C. WELL-S, 0F HOLLAND PATENT,

AND JAY W. BROWN, 0F IRIVER FORKS, NEW YORK, ASSIGNOBS T0 CHILDS & COMPANY, OF UTICA, NEW YORK, A CORPORATION.

CHARLES H.

i DUST-SPRAY'ING MACHINE. y

To all whom it may concern.'

Be itknown that We,-HENRY D. BABCooK, of Leonardsville, Madison county, FRANK C. WELLS, of Holland Patent, Oneida county, and JAY W. BROWN, o River Forks, in the county of Madison, and all in the State of Yew York, have invent-ed certain new and useful Improvements in Dust- Spraying Machines; and we do hereby de- Clare that. the following is a full, clear, and exact-description thereof, whiohwill enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the reference-numerals marked thereon, which form part of this speciiication.

The object of our present invention is to provide an improved dust spraying machine .of simple construction and effective operation.

Our invention relates to thatclass of dust spraying machines wherein the powder or dust to be scattered is carried in a receptacle and fed therefrom into a pipe through which is forced a strong current of air which carries the dust along and scatters it in the desired direction. As these machines are used for dusting plants, trees or vines they are usually portable and are commonly made tobe operativewhile being moved past the plants to be dusted With all substances used in this powdered form, means must be provided in the `receptacle .for stirring up or 'agitating-the powder. This is necessary because the movement of the machine over the ground and the vibration from the fan or 'other machinery used to produce the air current, tend to` make the powder settle together into a heavy close formation not adapted to being readily fed through'a small opening` and being then quickly separated into its fine particles by the current of air andy held insuspension thereby. Furthermore the agitation must be'of a character or supplemented by means adapted to effect a regular or steady supply of the powder. Several of the substances used such as powdered sulfur are found to be particularlydifiic'ult to keep in a. loose or free state and the machines heretoforeused to dust with ysulfur-or similar powders have been very unsatisfactoryv in that they failed to keep' the powder properly stirredupand y' ailedtoel'ect a steadyv supplylof .powder-in4 lSpeeiiication of Letters Patent. Application led January 12, 1912. Serial No. 670,855.

[a suiiciently loose state. To overcome thesev l difficulties is the object of our invention and we effect these improvements by certain "fea-v tures of construction oi the agitating and feeding means, and by certain combinations :thereof with the receptacle and its outlet which will be now particularly described.

y Figure 1 is a perpendicular sectional View of the receptacle and contained or adjacent .parts of a dust spraying machine embodying our invention. Fig. 2 is afhorizental sec tional view on line 2-2 of Fig. l'. Figs. 3 and 4 arev sectional views on lines 33 and ill---Ll respectively of Fig. 1. Fig. 5 isa perlines 5-45 of Fig. 1.

ticular description therev is illustrated the powder receptacle 8 consisting of an upper upony the frame work of the dusting machine so 'as to have its outlet 11 directly over and of' air.. Interposed between the outlet 11' and the opening 12 into the air pipe 13 is a as by means of lever 1G so as to partly or Patented Aug. 11, 1911.4.

pendicular sectional view on either of the 4 y y 70 Referring to the. drawing 1n a more par- The receptacle 8 is 'suitably lsupported close-to a circular opening 12in the air pipe'V 13 through-which is forced by any approprlatemeans (not shown) a strong currentV sliding gate 14 having an Vopening 15 therel in which may be brought to registerentirely' with the said outlet and hole and so give the' full extent of feed or the gate may be moved;l

entirely close the outlet from the powder receptacle.

removable cover 17 from the center of which tively 'wide flat perpendicular blade 19.

the bottom of the receptacle and the width therein.l

JPart way up in the conical portion of the receptacle there are mounted upon a hub 27 fixed to shaft 18 two oppositely`ex- Over the top of the receptacle is placed a extends downwardly a revoluble shaft 1,8' having fixed to its lower end a thin and rela-` The blade 19 extends into the outlet 11 in' ofthe blade at that point is substantially l' the diameter of said outlet 11 or as near thereto as is practical for free rotatioir tending flat arms '20 extending in a substanshaft 1 8 and the attached parts will always move in one direction. .The ,direction of such movement is indicated in the `drawing by arrows, and the angle of the ldifferent arts shownin the drawings is such as will e proper assuming the rotation is in the direction indicated.

From theouter ends of pressingarms 20 eX- vtend stirring arms 21 which follow theline of tapering wall 1,0 to its junction with cylindricalI wall 9 and` also follow' said wall 9 upwardly for a art of its height and fit thereagainst as closely vas may be without making too reat friction when rotated. As will be clear arms 2l are bent at a reverseangle `to, that of thearms 20 from which they extend, so that the forward ed es-of arms 21 are closer to theadjaeent wal s of the receptacle vthan the rear ed e o'f the arms. Itwill be obvious therefore t at upon rotation of these arms they will cut the powder away from the walls of the receptacle and that the upper or pendicular portion of these .arms will tend' to throw the powder toward the center of the receptacleV while the lower or oblique portion of the arms 21 will ytend to throw the powder obliquely upward and toward the center of the receptacle. These stirring arms 21 will thus periodicallycut the powder awa-y from the tapering wall 10 4and from the lower partof. the perpendicular wall 9 and so prevent thepowder from sticking to or caking up thereupon,` and will also loosen the wholebody of powder by throwing it in the two directions mentioned and letting it fallback again in large measure `to its original position. On account of the inclination of the stirring arms the powder will not be pressed together in .front ofthe arms but will slide olf. to the inner sideand for thesame reason the powder will have no ytendency to stick to the inclined face of the arms but will be cleared therefrom by the .motion of the arms. Thus these stirring armswill form agitators effectively keeping the mass of powder in a free or loose state and gently urging it toward the Center of the receptacle into a line over the outlet l1 or close enough theretoasto. fall that way'down the taper-A ing .wall 10.r v As will be seenfrom the arrangement of y seen in Figs. 2, 3 and 4, thesetinued until arts as described and particularly from Pig. 2 the pressing arms 20 are located directly below the conter of the mass of powder that is keit loosened by the agitating arms 21 and the rotation o these arms 20 periodically, cut in between the powder above those arms and its support on that portion of the tapering walls 9 that is below said arms 20, thus further agitating the powder. But the main purpose of these arms 20 is to force the powder therehclow downwardly between the tapering walls 10 toward the outlet l1 by cutting into the lower part of the loosened mass of powder thereabove and forcing it downward by rcason of the angle of these arms 20 as already7 described.

To prevent this forced downward feed from the arms 20 pressing the powder there; below into a too solid state is one of the purposes of the wide blade 19. As the powder is forced downwardly in an oblique direction from the arms inclination of the tapering wall lO and toward the outlet 11, the inner edge of this obliquely moving mass is engaged by the outer edges of the blade 19 and so again cut orugitated in a direct line above the outlet 1l and so loosened and prepared for a free fall through said outlet. It willalso be observed t'hat this blade 19 extends downwardly substantially to the sliding gate 14, so that this last agitating process is conthe moment the powder is to drop through the opening l5 in said gate and thence into the air pipe 13, thus insuring the powder being dropped into the air current in a loosened state so that it may be thoroughly and easily mixed with the air and so form an efficient, safe and economical dusting mixture. This stright, fiat, perpendicular, agitating blade 19 is found to be peculiarly efficient for the last agitatingprocess and has advantages over other forms of agitator-s heretofore used in that its width is suiiicient to a gitate the entire mass of powder directly above the outlet, while its flat surface does not press or wedge the owder together by its movement and o crs no lodgment for powder but is easily cleared of powder by the downward movement of the powder itself. All these features also ussist the blade 19 in its other purpose of forming an elicient means of distributing the powder over the outlet 1l and sov getting a regular and steady flow of owder into the air pipe 13 no matter to w lat cxtent the gate 14 is moved as long as it is in any open position.

The upper part of shaft 18 is journaled in a suitable bearing 22 in the center of the cover 17 and has its end extended therethrough and equipped with means for rotating said shaft and its attached parts. Such means may be a gear wheel 23 secured 20 by reason of the to' said upper end of the shaft and having teeth 24 to be engaged by a inion 25 which in turn is mounted on a sha with a driven sprocket wheel 26 extendingover the farther edge of the cover 174 as viewed in Fig. 1.

What we claim as new and desire to secure by Letters Patent is:

1. The combination in a dust spraying machine of a powder receptacle, an air pipe below said receptacle, an outlet connecting 'said receptacle and the air pipe, a perpendicular shaft centrally located and revolubly mounted in said receptacle, arms projecting horizontally from said shaft to the walls of the receptacle andextending upwardly along the contour thereof, the horizontal portions of said arms being downwardly inclined toward their rear edges and adapted to yieldingly feed the powder downwardly toward the opening and the upwardly extending portions of said arms having their forward surface rearwardly inclined as they leave the side walls and adapted to urge the powder toward the center of the receptacle and means for rotating said shaft.

2. The combination in a'dust spraying machine of a powder receptacle, a remov able cover for said receptacle, an air pipe below said receptacle, an outlet connecting said receptacle and air pipe, a perpendicular shaft journaled only in said cover and extending downwardly in said receptacle, arms projecting horizontally from said shaft to the walls of the receptacle and extending upwardly along the contour thereof, the horizontal portion of said arms being downwardly inclined toward their rear edges and adapted to yieldingly feed the powder downwardly toward the opening and the upwardly extending portions' of said arms having their inner edges inclined toward the center of the receptacle and means for rotating said shaft.

In witness whereof we have aflixed our signatures, in the presence of two witnesses, this 28th day of Dec. 1911.

HENRY D. BABCOCK. FRANK C. WELLS. J AY W. BROWN. Witnesses to signatures of Henry D. Babcock and J ay W. Brown:

FLOYD M. Cnoor, I. A. BABooCK. Witnesses to signature of Frank C. Wells:

HARRIET "WILLIAMS, ETHEL BUi'rERWoRTH.

vrearwardly and adapted to urge the powder

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