US902842A - Fan for pneumatic stackers. - Google Patents

Description

J. K. SHARPB, Jn. FAN FOB. PNEUMATIG STAUKEBS.

APPLICATION FILED HAY 7, 1908.

Patented Nov. 3, 1908.

FLE

23g www dlzhotnna UNITED STATES PATENT OFFICE.

JOSEPH. K, SHARPE, JR., OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE INDIANA MANU- FACTURING COMPA N Y, VIRGINIA.

OF INDIANAPOLIS, INDIANA, A CORPORATION OF WEST FAN FOR PNEUMATIC STACKEBS.

specification of Letters Patent.

Patented Nov. v3, 1908.

Application filed my v, 190s. sei-iai No. 431,32.

.Teelt whom it may concern:

`Be it known that I, Josnrn K. SnAnPn, Jr., a citizen of the United States, residin f at Indianapolis, inthe county of Marion and State of Indiana, have invented certain new end useul- Improvements in Fans for Pneumatic' Stackers, of lwhich the following is a specification.

My invention relates to improvements in lfans for pneumatic stackers such as shown and described in Letters Patent No. 717,565, issued December 30, 1902, to Albert A. Steltmg, and consists in certain vdetails of construction and arrangements of parts whereby I am enabled to simplify the construction thereof, and in means for insuring that the frictional driving element shall not cease its rotary motion prior to the cessation of motion of the driven element, and the uniform eripheral surface of said 'driving element. Ahns maintained and undue abrasion or' ilattenin of any portion thereof avoided by the ot erwise continued Vrotation of the driven element, as will be hereinafter more fully explained.

. The accompanying-drawings illustrate my invention.

'Figure lis a transverse vertical sectional view of a stacker fan and associated operatoing devices; Fig. 2, a bottom plan of the same; Fig. 3, a section of the, ratchet pulle which may be employed in connection with said fan, and Fig. 4 a further detail of said Pvlleythedrawings, the portions marked 1() represent,l lupper and side portions of the casingof" improved stacker fan, the upper portio whereof is provided with an eye or ingress'opening 11,-it being understood,

of course, that said casing is permanently se-A cured in the stacker structure and has a suitable'hopper or straw chamber leading into its ingress opening, and also has a discharge outlet leading therefrom, as usual. In a suitable bracket, 12, Imount the fain shaft] 13, to the upper end of which is secured 'me fan blades, 14, in any appropriate mannen The bottom, 15, of said fan casing is rigidly secured to said shaft 13, and has 'formed therewith or connected thereto about its peri hery an upwardly-extending flange, 16, wit 'n which the casing 10 1s closely fitted, said bottom being in the form of a friction disk designed to be rotated (andV y5,5 simultaneously therewith thefan blades) b y engagement with the friction wheel, 17, mounted on the shaft, 18, supported in suitablebrackets, 19, or otherwise, and driven by the ratchet pulley, 20, such arrangement of friction disk and fan blades constituting a frictionally driven fan.

In order to produce variable speeds of disk 15 the friction wheel 17 is so mounted as to be moved along shaft 18, and this may be accomplished by any suitable means, that shown being a shifting rod, 21, mounted in suitable brackets, 22, 23, appropriately secured to the ,Stacker frame, one end of said shaft being screw-threaded and provided with an internal screw-threaded hand-wheel, 24, Ia yoke, 25, being connected to the opposite end of said rod and secured to wheel l17, by the manipulation of which handwheel 24 said friction wheel 17 may be adj[ust'ed to the desired position on shaft 18. t will also be understood that the contact or pressure between said friction disk and friction wheel must be properly maintained at all times, and for such purpose I may provide any suitable pressure regulating means, that shown `being a coiled spring, 26, secured on the end hof shaft 13 bya set-nut, 27, by the adjustment of which nut the tension of said spring may be controlled, so that by increasing or diminishing such tension the `frictional engagement between friction Wheel 17 and disk 115-1nay be accordingly governed. The herein described means for producing variable speed of disk 15, and for regulating and maintaining the ressure between sai disk and its driving w eel 17, are similar to those disclosed in said patent herein referred to and specifically described therein, but, as indicated, I may employ any appropriate means forsuch ur oses.

The friction w ee 17, and the disk 15 may be of any suitable material, an eiiicient arrangement for the purpose being a driving wheel provided Wit a fibrousor other` peripheral surface, and a smooth metal disk.

In compensatinr the speed and improving tlieoperation of tie stacker fan by theeniplo nient of friction driving means, it is higiily important that the material thereof be protected from undue abrasion or flattenin at any point, and for this purpose I provi e the ratchet pulley, 20, on the end of shaft 18, of'an appropriate construction'for the purpose, that illustrated being of a Well known and common form, being provided power is appreciably diminished or'ceases,

with a consequent effect upon the ratchet pulle the ratchet sleeve by its momentum will isengage from the pawls land continue unvaryinglythe rotation of shaft 18 and friction wheel 17, so that said wheel 1 7 andV disk 15 are in regular and constant rotary contact, thus insuring that the friction wheel shall not first cease to rotate, and the friction disk 15 by its momentum continue to rotate for a period thereaftevhich circumstance would cause-that portion of the fibousor other material on the otherwise immovable friction wheel contacting with said disk to become worn or reduced to a flat condition,

. which, as will be readily understood, would render it unfit for use; and, therefore, by the application ofsuitable means, such as .a

ratchet pulley, for maintaining constant rotation of these elements independently of-any irregularityof speed of the prime motor. or intermediate driving mechanisms for the stacker fan, I am enabled to prevent'the uneven wearing or impairment of the friction pulley indicated.

I claim as my invention:

1. A fan for pneumatic stackers comprising a casing, a rotatable frictionally driven disk constituting the bottom of said casing, and fan Wi s'associated with and rotati with said dis for ejecting materia] from sali fan.

2. A fan for pneumatic stackers comprising a flaned rotatable disk, a easing fitti within sai flange, fan-wings associated wit frictionally driving said disk, and means for siniulta'ne'ouslyV ro' tating said disk and said fan wings 3. A fan for pneumatic stacke'rs compris-` tionally driving the same, and means for driving said element.

4. In a pneumatic stacker, theI combina'- tion, with a fan structure co'rnprisi a rota-14 table bottom member, of means for rictionally driving said member, means for adjusting saiddriving `means to vary the lspeed of said member, and means for rotating said driving means and maintaining constant rotati/ve action between it and said member independently of the speed of any. prime motor which may be employed. v

5. In a ,pneumatic stacker, the combina-` tion of a fan casing, a fan therein, means for 4said fan, 4and means for maintaining'said an andvfrictional driving means in coincident rotary motion independently of the irregularity or cessation of speed of the initial driving means for'said fan.

6. A pneumatic stacker fan comprising a rotary disk having fan' wings associated therewith, means for frictionally rotating the same, pressure-regulating lmeans forcontrolling frlctional contact between said fan 'and' its rotating means,.meansfornchanging the speed of said fan, and means inde endent of t e initial driving source of said parting motion to said rotating means` and said fan and maintaining the coincident rotation thereof. i

In testimony whereof I afflxmy signature in presence of two witnesses.

JOSEPH K. slnniriaiitQ l-itnesses:V

JAMES A. l/VALSH, LEE 'R. GARBER.

an for im-

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