USRE13071E - smith - Google Patents

Description

E. C. SMITH. FERTILIZER DISTRIBUTBR.

APPLICATION FILED 001216, 1909.

1 3,07 1 6 SHBBTHSHBHT k1';

Reissued Jan. 4, 1910.

M @M /MJ E. C. SMITH.

FERTILIZER DISTRIBUTBR. APPLICATION FILED 00'1'116, 1909.

Reissued Jan. 4, 1910.

lM l.ring

E. C. SMITH.

FERTILIZER DISTRIBUTER. APPLICATION FILED 001216, 1909.

Reissued Jan. 4, 1910.

E. c. SMITH. FERTILIZER \DISTRIBUTER. PPLIOATION FILED 0GT.16, 1909.

Reissued Jan 4, 1910.

B11/mr Zrzms C; Y@ Mm` E.. C. SMITH.

FERTILIZER DISTRIBUTBR.

APPLIUATION FILED 0011s. 1909.

Reissued Jan. 4, 1910.

E. C. SMITH. PBBTILIZEB DISTRIBUTER. APPLICATION FILED 00T.16, 1909.

Reissued Jan. 4, 1910.

{BETE-SHEET 6.

ja2` v mrglb-r. A103* j j nasf A1f PATENT oFFion.

ERNEST C. SIIIITH, 0F CANTON, ILLINOIS.

FERTILIzEn-nis'rrrpufrl'in. p

To all whom it may concern.:

Be it known that I, ERNEST C; SMITH, a citizen of the United States, and resident of Canton, county of Fulton, and State of Illinois, have invented certain new and useful Im rovements in Fertilizer-Distributers, of which the following is a specification, and which are illustrated in lthe accompanying drawings, forming a part lthereof.

The invention relates to a fertilizer clistributer of that type iirwliich there is provided a suitable hopper mounted on wheels,

Iand preferably having the generalapl'iealrance of the ordinary farm wagon', a distributing mechanism located at the rear of the hop r for disintegrating the fertilizing materialeand scattering it over the ground, and va traveling apron forming the floor of 4the wagon for' carrying the material contained within the hopper to the distributing mechanism.

More particularly, the invention relates to such a fertilizer distributor in ,which ythe .traveling apron is cai'ried by suitable endless chains and is moved out of the hopper as the materal is discharged, automatic means being provided for reversing the movement of the apron and causing it to return to the loading osition when the hopper has been complete y em tied.

In devices o this kind as usually made the distributing mechanism forms the only means for closing the discharge end of the hopper, and, durin the ,operation of loading and driving to t e field to be treated, the

material becomes very tightly packed againstthis mechanism, so that it is started with great difficulty. To overcome this objectionable feature it hasl been found desirable to lstop the apron for loading before, it has` reached the limit of its inward travel; then,

just before the loadis to be dischargdthe apron may be caused to complete its inward I' movement,'thus carrying the materia away 45 from tlie distributingmechanism a short distance, so that the latter may be easily started. This method of operation has', however, been `unreliabledn view ofY the fact that it requires (21056y attention of the driver to arrest tle movement of the apron at the proper time.

One of the objects of vthe invention is,

therefore, :to provide automatic means for arresting the apron as just described, and vimproved manually controlled '55 mechanism for. starting the apron to co..i,

shiftjn Cf Specification of Ressiied Letters Patent. Reissued J an. 4,1910.

lOriginal No. 930,098, dated August 3, 1909, SerialuNo. 287,718. Application for reissue tiled October 16,

' Serial No. 523,085. c

plete its instroke and to begin its outward movement when it is desired to discharge the contents of the hop er.`

provide improved means for reversing the movement of the apronwhen the limit of'its vices of this kind.

The invention consists in the construction and arrangement of parts to be hereinafter described and claimed, and as illustratedin the accompanying drawings, in which *Figure l is a central longitudinal vertical section fllle device, some-.of the parts being `broken away; Fig. 2 is a plan view of the 'I parts being broken away to the plane indicated by the line {lL-9, Fig. 8; Figs. 10 and 1l are sectional views on the lines 10f10 and 11-11, respectively, of Fig. 8, some of the parts being shown in elevation in Fig. `'10; Fig. 12 is a section on the line `12i12 of 5 Fig. 11; Fig. 13 is a' section on the line .1S-13 of Fig. 2; Figs. 14, 15, 16 and 17 are sectional views on the lines 11i- 14, lai-.15, 16h16 and 17--17, respectively, ot' Fig. 13;

of Fig. 17; Fig. 19 is a sectional View on' Figs. 22 and 23 are sectional and plan views,

arated from other parts.

A hopper 30, which 'will commonly .l about the size and shape'of a wagonfbody l but Without the usual ends or bottom, is

l, supported by front and rear carrying l I wheels 31, 31 and 32, 3.2, respectively, the

Further objects of t e invention are tov outward movement has been reached, and to increase the etiiciency and durabilityA of de saine, someof the parts being broken away; 'Fig 3 is 'a detail vertical section on the line Fig. 18 is a sectional view on tlie line 18--18' zthe liiie 192-19 of Fig.' S; Fig. Q0 is a detail` `illustrating them in a different position;l

itis" roo l respectively, showing in detail the construction of certain parts of' a link beltlnsedinfs, the device; Fig. Q4 is a detail plan View of. a clutch shipper used in the device, sep'ffl lilo :front Wheels being' mounted in any conwith' a longitudinally extended bearing surface 36, upon which the side walls of the .hopper rest, and are rigidly held in place,

)y means of the lag screws 37 (Fig. 1S). The rear carrying wheels are held in position on the shaft by suitable collars 32 and, as shown in the drawings, both of these wheels drive the shaft, whenrotated in a forward direction, by means of a ratchet hub mechanism 38. This mechanism is pro are mounted in a bar 58", secured by brackets.A

Avided foreach of the wheels 32 and may be of any desired construction; preferably it is such as is ordinarily used on agricultural` machinery of various' sorts, in which airotating axle is employed for driving the moving parts, and is shown in Figs. 5, 8, 9 and 13. It comprises a pawl plate 39,` pinned to the shaft just inside of the carrying wheel and provided with one or more pawl arms 40, each of which is advanced by a spring 4l to engage inwardly and forwardly directed-ratchet teeth 42, formed within the hub of they wheel. A movable apron 43, substantially equal in length to that of the hopper 30 and composed of slats 44 mounted on endless chains 45, 46, foi-ins the bottom of the hopper. The chains 45, 46, turn over sprocket wheels 4T and 4S, journaled inv brackets 49 at theflorward end ot' the hopper, and at the rear of the hopper over s cckets 50 andv 51, rigidly secured to a s 'ft 52, journaled in the frame of the de vice and adapted to be rotated in either direction to cau/se the apron to move into or out ofthe hopper. .The upper turn of each of the chains 45' and 46 rest on` a series of rollers 53, journaled in the frame members of the hopper, land the forward slat 44 of the apron 43- carries a suitable front board l or fo ower 54 for preventing the contents of the hopper from. fallingover the 'end of the'apron. Y

Akt-he rear end of the hopper is the` usual distributer or drum 55, journaled in brackets 57 secured to its Walls. This drum is provided Avifi'th radial fingers, 56 for engagin the inater'ial to scatter it over the land, and extending over the hopper adjacent the dis- 4tributing drum is a series of prongs 58 for aiding in its disintegration. The prongs 58 to the walls of the hopper, and being of ordinary construction/have been omitted from Fig. 2 .of the drawings for the sake of clear- DESS.

The distributer or drinn 55 and the apron 43 are driven from the shaft 33, theinechanism for driving the distributor being shown in the drawings adjacent the left side of the hopper as viewed from the rear, that for driving the apron being at the right. Each of these mechanisms is adapted to be controlled in part by a driver occupying a/i seat adjacent the front end of the device.

For so controlling the mechanism for driv` ing the distributer a treadle 59, pivotally attached to the frame of the hopper by a bracket 60, is provided. This treadle is automatically `raised to stop the distributer when the apron 43 reaches the limit of its outstroke, so that usually it vwill be employed It carries a pawl 62, playing over a quadrant 64,' to which the lever is pivoted and which is in turn secured to the frame of the niachine by a bracket 65, formed integral with the uadrant. The pawl 62 preferably takes i thel oi'ni of a roller adapted to engage correspondingly.f rounded notches in the quadrant, 64, out of which it may be raised` by a spring-controlled grip piece `63 of ordinary construction. The lever 61 may be manually shifted to cause the apron to move in either direction, or to arrest its movement, and

automatic means are provided for shiftingthe leverfto reverse the movement of the apron when it has reached the limit of its outstroke and to stop it just short of the limitof its instroke and again at the end of that stroke.

For drivin the afpron a crown gear 66,

having severa .sets o obtaining different speeds, is loosely mounted on the shaft 33 and is adapted to be rotated with the shaft by means of a"clutch mechanism, or to be rotated in the reverse directlon at a reater speedv by means of the clutch and suitable interposed gearing. A pinion 70, splined upon a worm sha t 71,

teeth, as 67, 6,8, 69, for

meshes with the crown teeth of the gear 66, y

and through the Worm shaft andl a`w'o'rm wheel 72 drives the shaft. 52 for moving the apron. The worm shaft 71 is journaled in a bracket 73 secured to the frame of the machine, and so shaped as to' form a casing or housing for the worm wheel 72. As most clearly shown in Figs. 6- and 7, the hub of the pinion 70 is engaged by a yoke 74 secured to a rody 75, which` extends to the front of the machine Where it is joined to a lever arm 76, by means of which it may be shifted to move the pinion into engagement with any one of the several sets of crown teeth on the gear 66. YThis 'iinion is referably provided with a rounde foi-in o!) teeth, as shown at 77, Fig. 6, of less width than the annular vaces 78 of the gear 66,"s'o that the pinion i .ay be shifted from oneset of teeth to the otherwhile the device is in inotion without' dm'gerpfbreakage. For driving the gear the'opposite ldirection from which the 38 turns to impart a reverse movement thea i'on, a sprocket wheel T9 is loosely 'jl'fiout y on theshaft 33. By means of' a 8,()` this sprocket wheel drives a coun- 81, journaled in the bracket 35, and

` rlhying a sprocket wheel 82 for receiving the chain, and a gear 83 which meshes with a flo 84 formed integral withv the crown gear 06.

A clutch member 85, most clearly shown in Fi 8, plays between the gear (36 and the .l'iproc et 79, and has at either end a set of engaging fingers 86, 86, and 87, 87, for en- `lliging lugs 88 and 89, formed on the'face of` t sprocket and of the gear, respectively.-

e This clutch member is loosely mounted on the 'shaft 33, but is caused to rotate with it bg' means of a dog rigidly 'secured to the ft, referably, though not necessarily,

two sue dogs, 90- and 91, being employed, one ad'acent each end of the clutch member. ith these dogs the clutch fingers S6,

`215 '87 `have a sliding engagement. The dog 91 preferably takes the form of a sleeve, in-

closing the shaft andturning in a bearing in the bracket, and itis cored out to receive the fingers 87. Preferably each of the 80 dogs is provided with roller bearings 92, 9B, for engaging' the sides of the clutch fingers, to insure ease of operation when the clutch is shifted. A bell crank ship er 94, pivotvallysecured to a bearing 95 fbrmed 1n the 85 bracket 35, and connected to the lower end kof the lever 61 by means of'a rod 96, is provided for operating the clutch. The clutch member 85 is of such length that in its mid position it is not engaged with either the ,40 sprocket-79 or the gear (i6, so that when in t isl'po'sition, which corresponds to the centra] osition of the operating lever 61, shown in Fig. 21, theapron 43`wi11 remain stationar The ,clutch may, however, be shifted 45 from .one extreme position to the other .to reverse the movement of the apron, and when the device is organized as shown inthe draw-` ings. this is automatically effected when thel apron has reached the. limit of its outward movement by the following described means`:'-

A stop 97, loosely mounted `ontlie rod 90," is adapted tor'be engaged by the advancing'. 'edge 98 of the apron 43 and bears hipon af` springfltl, coiled about the rod 96 and reacti, in g upon a stop 100 fixed in position on the rod@ Preferably the pawl 62 engages the rounded notches of the yquadrant 64 with sufficient forceto .prevent the shifting `of the 69 lever` 61 until the spring 99 has beenconsiderably` compressed by the ad-va'nce of the apron. When, however, it becomes dislodged the expansion of the spring shifts the lever with such force that the pawl leaps 5'? over the central notch of the quadrant, and

the clutch member is shifted from engagemrnt withthe gear GG to the sprocket wheel l 79. and the movement of the apron `is reversed.; An offset 101 fin the qnadrant64 guards the central notch to 'assist in effecting this result.

For automaticallyv stopping the apron before it reaches the limit of its return Inovenient, there is provided on Vone of the` supporting chains, as 40, an o erating finger 102, preferably taking the forni of a spe- @muy Shaped chain link (Figs. 22 and 23).

From the side ofthe lever 61 a pin 104 rojccts into the path of this finger an is adapted to be operatively engaged by it to so -shift the lever to arrest the movement of the apron.I As illustrated, the lever occupies its cent-ral position when the movement of the I apron has been: arrested, and in Fig. 21 is shown the position ofthe,parts inimedatel after the lever has been shifted to this position, as just described. From an inspection of this figure it will be readily?, understood that in order to shiftthe lever` to cause the apron to complete its inwardimoyenient (the lever then occupying a rearward position, as E shown) the pin 104 must be shifted. to clear the engaging finger 102. For this reason the pin 104 is movabl Y attached to the lever 61, preferably being ormed integral with a -sleeve 105 having a sliding engagement with the lever. The pin is normallysupported in the path of the finger 102 by means of a spring 107 reacting between an overturned foot 108 of the lever 61 and a lug 109 pi'o- 100 jecting from the sleeve 105, the upward movement of the sleeve being limited by a pin 110, set through a rod 110l about which the spring is coiled, and engaged bythe lug 109. As. shown the sleeve 105 is rovided 105 with a treadle 106, by means of whic it may be depressed against the effort of the spring 107, and when so moved to the dotted lines position of Fie. 21 the lever 61 may be manually returned Preferably the apron is again automaticall stopped at Itbe end of its inward movement iy a second operating fin? ger 108., formed on the chain 4G, for engag-` ing thepin 104. The outward movement of theapron is started, when the device is con-y structed as shown in the drawings, by man-V ually shifting the lever G1 until the pawl (32 f engagesthe forward notch of the quadrant Q4, and in order that the finger 102 mayride 120 over the pin 104 as the apron moves out, this finger is provided 'with an inclined face 111 which engages the pin byacam action todepre'ssit. A. v v Y 17 The mechanism for driving the distributer or vdrum 55A may be of any desire:1 form',v preferably a gear 112 is loosely mounted on the shaft 33 for this purpose and may bey caused to rotate with it by means of a clutch mechanism, as lwill be hereinafter described. 13'?f to its rearward position to 110v start the apron.

i This gear meshes with a pinion 113, mounted on a stub shaft 114 set in the bracket 34, and which has formed integral with it a s rocket 115,'over which turns a chain 116, eading to a similar sprocket 117 on the end` of the beater shaft 118. The clutch mechanism for connecting the gear 112` with the shaft'33 is illustrated in Iigs. 13 to 17, inclusi\'e,` and y in Fig. 2,4, and is. rncted as follows.:- lOThe gear 1124i) plemde'd with a long hub "119, upon which is slidingly mounted a clutch member, preferably taking the form of a sleeve 120, having longitudinally extending fingers 121, which reach through 'apertures 122 inthe body of the gear and may, by` shifting the sleeve, be caused to mo \'e into or out of enga ,vement. with lugs '123 formed on the back of one of the pawl plates 39. For shifting the sleeve 120.011 theA hub 119 a yoke 124 engaging a groove 125 126 (Fig. 24) yextends at right angles from the yoke, and takes a bearing in wings 127, 128, in the bracket 34; rl`his arm is adapted to be yreeiprocated to shift the sleeve by a cam 129, turning on a stub shaft 130 secured tothe bracket 34, and engaging a notch 131 in the arm. rod 132 with the operating treadle 59, previously described, and uptn this rod a stop 133 is secured to be engaged by the advancing edge 98 of the outwardly moving apron to raise the treadle and disengage the clutch sleeve 120 when the contents of the hopper il have been completely discharged.

revent the accidental turniugol the cam 129 its hub is flattened, as. indicated at 134 and 135, and against this flattened portion a piu 136, playing through an aperture ina lug 137 in the bracket 34, is yieldingly depressed by a spring 13S.

The lower'turn of the chains 45 and 46 carrying the apron 43 are supported byu rod 139, extending bcueatf `1e hopper 30 and' secured thereto by brackets 140, this rod being provided to cause the chains to clear the carrying wheels 31 when the device is being turned about and to guide the apron against the stops 97 and 133.

l`he operation of the device is as follows:- Thehopper is filled with material to be distributed over the land when the traveling` apron 43 is a few inches from the end of its return movement, the a aon having been stopped inthis position y contact of the operating finger 102 on the chain 46, with the pin 104, shifting the lever 61 to its central` position., 'as illustrated in Fig. l21, the clutch member 85 occupying the correspond- 1- ing. position in which it is disengaged from both the sprocket 79 and the geartt. As the device is drawn forward the rear axle or driving shaft 33 is rotated from the. carrying wheels 23 by means of the ratchet' hub meehanism 38, and when the field to be treated in the sleeve is provided, and an arm The cam 129 is connected by a has been reached the lever 61 will be manually drawn to its rearward or upright position, tle sleeve 105 being first depressed to the dotted line position of Fig. 21 by pressure upon the treadle 106 to permit the pin 104 to clear the finger 102. This movement of the lever`61 engages the clutch member 85 witlrthe sprocket wheel 79, so that the crown gear 66, which drives the apron through the medium of the`worm shaft 71 and worm wheel 7 2, is turned in the opposite direction from the driving shaft 33. and the apron 43,. with its load will be drawn away from the distributor This movement, however, will be interrupted as soon as the apron has reached the limit of its instroke by contact of the finger 2103 with the pin 104, which shifts the lever 61'backto its central osition. The distributor 55 being now entirely free from the material. may be started by depressing the treadle 59, which rotates the cam 129 to the left, as viewed in Fig. 14, and

causes the clutch '120 to engage the lugs 123 of the continuously rotating pawl plate 39.

As soon as the distribnter 55 has been started, the attendant will start the outward nievement of the apron '13 by` throwing rthe lever 61 to its extreme forward position, causing the clutch member S5 to engage the lugs 89 on the face of the gear 66, and the gear to rotate with the driving shaft 33 and move the apron, with its load, toward the distributer. "ueu the entire contents of the hopper have been discliarged the advancing edge 98 of the Yapron will have reached the stops 97 and 133, the spring 99 will have been compressed and the rods 96 and 132 thrown for,- ward.' '.lhc forward'movement of the rod 132 raises the treadle 59 and disengages the clutch sleeve 120 from the lugs 123 on the pawl plate 39, so that the distributer will be stopped. 96, however, aided b v the effort of the spring 99 will throw the lever 61 to Aits other extreme or rearward position. and theclutch member will become engaged with 4thev sprocket wheel 79, vcausiiug the apron 43 to be drawn back into the hopper. Near the endv willbe interrupted by contact of thefinger 102 with the pin |01, which shifts the lever;

operations just described may be re atedaj To secure successful operation o the automatic mechanism for reversin the movement of the apron it has been` ound desir-. able, thoughfnot essential, to employ a clutch, as' shown in which the movable parts are notl splined to the shaft, as has heretoforev been that kind, the frietional 'resistance to the, movement of the clutching member bein ,s greatly reduced by the use of the dogs au 91, as shown.

The forward movement of the rod of the instroke of thel apron its movement 61 'to the central position. The device .is now ready for reloading, after which the cycle of`v` 4 the usual t'orm of construction of clutches of I claim-as my invention tion, a hopper, a carrying Wheel tork the hopper, a reciprocating bottom for the hop- 1- per, means for actuating the hopper` bottom from the carrying Wheel,- a clutch for controlling the actuating means, a level.' for shifting the clutch, a stop moving with the hopper-bottom and an appartenance of the lever projecting into the path of the stop and intermediate of the ends of movement thereof, the stop being adapted to operatively engage such appartenance fin one direction of movement only and to pass the said nppurtei'iance after such operative engagement. I

2. In a fertilizer distributer, in combination, a hopper, a carrying wheel for the hopper, e movable bottom for the hopper, means for actuating the hopper-bottonrfrom the carrying wheel, a clutch for controlling the actuating means, a lever for shifting the clutch, a stop moving with the hoppenbottom, a pin movably secured to the'lever and normally extending into the path of the stop, and means for moving the pinon the lever.

3. In a fertilizer distributer, in combination, a hopper, a carrying wheel for the hopper, a movable bottom for the hopper, means -for actuating the hopper-bottom from the carrying wheel, a'clutch for controlling the actuating means, a lever for shifting the clutch, a stop moving with the hopper-bottom, a sleeve slidalily .inclosing the lever and carrying a pin projecting into the path of the stop, a spring tor supporting the sleeve, and a foot-piece carried by the sleeve.

4. In a fertilizer distributer," in combination, a hopper, a carrying wheel for the hopper, a movable bottom for the hopper, means for actuating the hopper-bottom from the carrying wheel, a clutch for controlling the actuatingmeans, a lever for shitting the clutch, a stop moving with the hop|n rbot toln and having an abrupt :forward face and an inclined rearward tace, and a sleeve slidably inclosing the lever and. carrying a pin normally projet-ting into lhe'path of the stop.

5. ln la fertilizer distrilmter, in combination, a hopper, a carrying wheel, a rotating axle driven by the carrying wheel, a movable bott'omtor the hopper, two gears loosely mounted on the axle, suitable gearing for communieating nu,tion in opposite direca clutch rotating with the axle and playing between the gears and adapted when in its mid position to be disengaged l'rom lmth, an operating lever, a pawl for yieldingly retaining the lever, a stop engaged by the moving hopper-bottom, and a spring connecting the stop and the lever.

6. In a fertil/izer distributor, in combina- 1. In a fertilizer distributer, in combinations from such gears to the hopper-boltom,

, tion, a hopper, a carrying Wheel, a rotating axle driven bythe carrying, Wheel, a movable bottoin for the hopper, tivo gears loosely mounted on. the axle, suitable gearing for communicating motion in opposite direca clutch rotating with the axle and playing between the gears and adapted when in its mid position yto be disengaged from both, a lever, connection between the lever and the clutch, a` quadrant .fixed in position adjaand yieldingly engaging the quadl'ant, and a yielding trip for throwing the lever and adapted to be engaged by the hopper-bottom. l 7. In a fertilizer listributer, in combination, a pair of side sills, a hopper mounted thereon, distributing mechanism, and feed mechanism for unloading the hopper, a `bracket bolted to one of the sills, a rotating axle, carrying wheels mounted thereon, a

and jcurnaled in the bracket, a variable speed.A gear having clutch teeth loosely mounted on the axle outside of the sills and adacent; the bushing, connection between the variable speed gear and the feed mechanism, a shit'table clutch member mounted on the axle between the sills and having clutch prongs extending `through the bushing, means for shifting the clutch member, and means for drivingthe distributing mechanism.

8. In a fertilizer distributer, in combination, a hopper, a movable bottom for the hopper, mechanism for driving the hopper bottom including'a rotatingpart and a movable clutch member adapted to enga e and be disengaged. from such part, clutc shifting means comprising a hand lever and connection between the hand lever and the movable clutch member, a quadrant having rounded notches, a spring-advanced roller pawl carried by the hand lever for engaging the rounded notches ot the quadrant to vieldingly maintain the hand level' in ad` justed position, and a contact-piece adapted for engagement by the hopper bottom carried by the clutch-shitting means.

t). ln a fertilizer.' dstributer, in ycombination, a hopper, a movable bottoni for the bottom inelndinga rotating part and a movable clutch member adapted to engage and be disengaged' .from sueh part, clutch-shit'ting means comprising a hand lever and connection between the hand lever and the movable clutch member, a quadrant, a pawl carried by the hand level' lor engaging the quadrant to yieldingly maintain the hund level' in adjusted position, and ayielding contact-piece adapted for engagement by he hopper bottom carried by the `clutchl .drifting means.

.tions from such gearsto the hopper-botLom,4

cent the lever, a paw] carried by the lever' bushing fixed against rotation on the axlel hopper, n'ieehanism for driving the hopper hopper, mechanism for driving the hopper 'bottom including a rotating part and a movable clutch member adapted to engage and be disengaged from such part, clutch-shifting means comprising a hand lever, and connection between .the hand lever and the movable clutch member, a spring latch ,for maintaining the hand lever in that adjusted position, wherein the movable clutch memer is engaged with the rotating part and a contactpiece adapted to be moved by the ho per bottom to release the said latch and shift the movable clutch member. l

511. In combination, a shaft, two wheels loose on the shaft, mechanism driven by one of the wheels, operative connection between the wheels whereby they rotate simultaneously in opposite directions, a clutch driven by the shaft and engaging the wheels in alternation, a manually-controlled shipper rod joined to the clutch anda spring-supported stop sliding on the rod and lying 1n the path of a movable part of themechanism.

v12. In combination, a shaft, two wheels loose on the shaft, mechanism driven by one of the wheels, operative connection between the wheels whereby they rotate simultane-` ously in opposite directions, aclutch driven by the shaft and 'engaging the wheels in a1- ternation, a manually-controlled shipper member for shifting the clutch and having a .yieldingl supported contact-piece lying in the pat lof the movable part of the mechanism.

13. In combination, a shaft, two wheels t loose on the shaft, mechanism driven by one of the wheels, operative connectionbetween they Wheels whereby they rotate simultane- 4movable part of the mechanism.

14. In a fertilizer distributer, in combination, a hopper, a movable bottom for the hopper, mechanism for driving the hopper bottom includingr a rotating part and a movable clutch member adapted to engage and be disengaged from such part, clutch slnftf ing means comprising a hand lever and cony,

'nection between the hand lever and the movable clutch member, a latch for maintaining the hand lever in that adjusted position wherein the movable clutch member is engaged with the rotating part, and mechanism actuated by the hop er bottom for releasing the said latch an moving the hand lever.

l15. In a fertilizer distributer, in combination, a hopper, a movable bottom for the hopper, meclianism for driving the hopper bottom lncluding a rotating'part and a movable clutch' member adapted to engage and bedisengaged from such part, ya quadrant, mechanism for. shifting thel movable clutch member including a hand lever and a pawl carried by the hand lever and cooperating adapted for engagement'by the hopper b'ottom for raising the pawland movingthe hand lever. l

` ERNEST C. SMITH.

Vitnessesz y W. F. Moons, FREDSix GLmoN.

.with the quadrant,v and a ycontact, piece

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