US1797107A - Hammer-type mill and feeder - Google Patents

Description

March 17, 1931. A. L. vl-:EDER A 1,797,107

HAMMER TYPE MILL AND FEEDER Filed Oct. 1'7, 192,9 4 Sheets-Sheet l a W f sa? a www March 17, 1931. A, L VEEDER 1,797,107

HAMMER TYPE MILL AND FEEDER Filed Oct. 17, 1929 4 Sheets-Sheet 2 Mal'ch 17, 1931. A L VEEDER 1,797,107

HAMMER TYPE MILL AND FEEDER Filed ont. 17, 1929 4 'sheets-sheet 3 JZ. Feeder,

March 17, 1931. A. L. VEEDE 1,797,107

HAMMER TYPE MILL AND FEEDER Filed Oct. 17, 1929 4 Sheets-Sheet 4 Patented Mar. 17, 1931 y UNITI-:D STATES PATENT OFFICE ALBERT' L.VEEDER, lor BoIsr-r,v IDAHo, AssIoNoD To vfa I.. MILL AND FEEDER con.- roDATIoN,-oF Borsa7 IDAHO, A` CORPORATION or' INDIANA HAMMER-Truman AND DED'ED Application led october 17,4929. Serial No. 400,318.

Y This invention relates to 'a mill 4of the ham- ;ner type and to a feeder mechanism thereor. f It is aimed to provide .a novel'construction which willhave greater'. capacity thanjexisting types and whichwilli` operate morevrapl idly and will better operate .inconnection with` hay and grain-jointly, orseparately.

A further object 'is to provide a novel construction whe'reini the hammers coact to form a'V-shaped-passage on thecylinders to lead the material to the center 'from each end of the cylinder in order to keep 'the grain or lalay working toward the centerof the cyliner M .A urthe'r'obj ectis to provide anovel construction fof mill which will havea plurality rather than a single .cylinder, arranged in coacting relation wheieb 'one prepares, the

material for the other an .;Willali'ordgreater capacity inthatthe material will be finer when it enters the secondfcylinder and will leave the same more' rapidly. Further it` is aimed to Iprovide novelautof matically operating lutc mechanisinwherebythe feeding, is .controlledin .case of clog. gmg oryslowlng down of lopration of the workingparts.y f Various additional objects and advantages will becomeap arentfrom aconsideration `of jthe descriptmn 'following taken in-con. Anection with .accompanyin drawings .illustrating an Aoperative emboiment.V .Insa'id drawingst-- Figure 1.1 is a vlew-,in'side elevation lof the im roved. feederad mill, y, r

- gure 2 is a verticalcentral sectional view thrcfigh the feeder,

Fi re 3 is a detail sectional' view taken on f the line 3-3 of, Figure 6, l Figure 4 is a view partly in elevatlon Vand partly in section, illustrating the.4 clutch mechanism of Figure connection with adjacent structure,

. line 5-5 c- Figure 6, Figure 6 is aplan view of-the improved lfeeder and mill,.;` f x Figure 7 is: s central vertical sectional 5c view through the mill, and, i

Figure 5 a sectlonal view'taken on the Fi e 8 is a cross sectionalview taken on the l1ne88 of'Figure '2'.l

Referring specifically to the drawings, the parts const1tuting the lnvention may be sup-- ported upona base or latform as at 10 and essentially com riset e `hammer type mill as at A and a eeder mechanism as at B. p Referrin Aspecicall to the hammer mill Afan as detaile -in Figures 7 an 8, the same comprises a vertically disposed casngllhaving means 'therein to cut hay or the likefed by the'feeder mechanism B. .In addition, grain may also be suppliedinto the casing ll'as throughsJ hopper 13 arranged in communication with a chute 14 on the casing A11,a-slidableand adjustable valve or bottom 15 being provided for the hopper to control the supply of the grain into the mill. By reason of the present construction, bothl Agrain and; hay may be supplied to the mlll attl 1e same time, thus forming a. mixture, or if desiredeither grain or hay alone ma be supplied'fto the mill.

withili the.mill are upper and peratin lower vcylin `ers -16 andl 17 which may compriseendhdisks 18 and 19, respectively, keyed to'shafts20 and 21, respectively, which are journaled in suitable bearings in the walls of the casing 11., Rods 22 and 23 connect the plates or disks 18 and `19 tog ther and loosely mounted on each rod are a pelurality of. hammers. 24. l The hammers 24 each preferably consist of three arms or-hammer heads 25, at the junctionof which-a triangular slot or opening 26 isn provided. Such openings 26 enable the hammers, to be strung and loosely mountedon the rods 22'in view of the fact that the openings 26 are relatively large with respect to the rods. The hammers thus have free movement on the rods and dilerent heads alternately come into play and thus aord longer'life for thehammers.. It will be noted also that the heads 25 are disposed atan les to each other, thus forming between a jacent pairs, substantially V-shaped passagesl through which the grain and hay or'either must pass and which serve to Adirect the samevfectively: distribute it. Suitably fastened' within casing 1 1 are foraaninous` concave tothe center of the cylinders 'andmore ef-"xf screens 27 and 28, that at 27 for the upper cylindervbeing of larger mesh than that at 28. The hammers 24 serve to engage the hay and grain or either adjacent the concaves 27 and 28, milling the same and causing it to pass first through the concave 27 and thenthrough the concave 28. The concave 27 is larger than the concave 28, and the milling is more rapidly accomplished.

A bottom 29 is provided in the casing 11 having a central trough 30 in which an auger, screw or conveyor-31 is rotatably mounted, the same having a shaft 32 j ournaled in suitable bearings .in the walls of the casing 11.

In order to operate the mill, a pulley 33 is provided on the shaft 2O and thereover a belt 34 may be trained,which is driven from any suitable source of power. Pulleys 35 and -36 are keyed to the shafts 20 and 21, respectively, and a twisted belt 37 is trained thereover whereby the cylinders are operated in op osite directions.

other pulley 38 is keyed to the -shaft 21 and is traversed by a belt 39 which also traverses a pulley 40 keyed to the shaft 32, whereby the conveyor 31 is operated. This conveyor 31 feeds the milled material to the side'of the mill to be discharged into wagons, or any other means or location of disposition for the milled material. It will be noted that the auger 31 is also eguipped with fan blades 33 whereby thedevice will also serve as a fan or blowerto assist in discharging the milled material.

It should also be mentioned that the lower cylinder is rotated faster than the upper cylinder for instance at a speed of two thousand revolutions per minute as compared with fteen hundred revolutions per minute in order to receive the ground material from the upper cylinder as fast as it is produced. In using the two cylinders and concaves, the ma terial is milled in stages, that is it is discharged through the concave 27 coarser than would be the' case if it discharged through but a single concave. When it does discharge through the concave 27 it is relatively fine and is further milled and passed 'n a finer condition through the concave 28, the mill accordingly having greater capacity and ybeing capable offaster and more efficient operation.V

Reverting to the feeder mechanism B, the

same comprises a frame essentially having side boards suitably connected together as by bars 46,'and connected also to the casing 11 adjacent the opening12. Suitably journaled in appropriate bearings on the walls 45 are shafts 47 which have sprocket wheels 48 keyed thereto andwhich are in engagement with sprocket chains 49 constituting partv of a raddle or endless conveyor generally designated 50 and which may be of any appropriate or conventional form. Operation of the raddle feeds hay which is supplied vthereto in the direction of the opening 12 walls 45 and extendin Adjacent such opening 12 and journaled in the walls 45 is a cutter-operating shaft 51 provided with a plurality of cranks 52 which are equi-distantly spaced about the axis thereof.

J ournaled and suspended on each crank 52 is a cutter member53, bearings 54 being bolted thereto as shown and overlapping the crank. Cutter members 53 may have depending toothed portions 55 vthereon which are suitably sharpened and adapted to engage the hay, which is disposed transversely of the raddle 50, as the same advances and feeds the hay toward the/opening 12. Cranks 56 extend rigidly from the cutter members 53 and have rpitmen 57 pivoted thereto at 58 and pivoted at 59 to the sides 45. In addition, feeder bars 60 are pivoted at 61 to the cutter members 55 and at 62 to links 63 carried by floating or vertically slidable blocks 66 guided in suitable -frames 67 and normally held in lowermost position by expansive coil springs 68, whose tension is regulated through the adjustment of screws 69 appropriately mounted.

At the lower ends, the blocks 66 have a shaft 70 journaled therein and which extends outwardly through vertically elongated slots 71 provided in the walls 45. Keyed to the shaft 70 isa feed roll 72 for the hay which is arranged directly above a coacting feed roll for the hay which is designated 73 and keyed to a shaft 74 appropriately journaled in the to the outside thereof' As best shown in Flgures 5 and 6, shaft 51 is provided with a drive pulley 75 which is driven from a pulley 76 on the shaft 20 through the medium of a twistedr belt 77. Such pulley. is arranged on one side of the feeder mechanism B. On the opposite side of such feedermecha-nism, a sprocket wheel 78 is keyed .to shaft 51 and traversed by a sprocket chainv 79 which also traverses a sprocket wheel 80 keyed to a shaft 81 suitably journaled on one of the walls 45 and which has a gear wheel 82 keyed thereto. Asprocketv wheel 83 is also keyed to shaft 81`and is traversed by asprocket chain y84 also trai its other end which spring is fastened tothe sc lever 86 and the adjacent side 45.

The gear wheel 82 is in mesh with a` gear wheel 90keyed on'a shaft 91 appropriately lmounted andjournaled on one of the sides` 45 and which has a sprocket wheel 92 keyed thereto which is traversed by a sprocket chain -93, also traversing a -sprocket wheel 94 rigidwith gear wheel 90 and thus loose on shaft 93. A sprocket wheel 96 is also keyed to the shaft 95 and has a sprocket chain 97 travers- 'ing the same and also traversing a sprocket `should clog between the feed rollers 72 and 73 or if the speed of rotation of such rollers should diminish for any reason. To this end, the gear 90 is loose on one of the sleeves of shaft 91 but normally clutched therewith through the engagement of a spring-urged pawl 96 carried by a disk 97 on the sleeve of shaft 91 opposite to that" carrying the gear wheel 90. vNormally the pawl 96 engages one of a plurality of projections .98 on the gear wheel 90, thereb maintaining the sleeves of shaft 91 connecte together.

A governor mechanism 99 is driven from the shaft 51 to control the engagement of the` pawl 96 and projection 98. This governor comprises al shaft 100 having a worm 101 thereon keyed to a worm wheel 102 keyed on said shaft 51. A conventional governor device 102 is carried by shaft 100 so that centrifugal motion will cause a sleeve thereof 103 to move vertically onvthe shaft 100 and accordingly vary the position of or rock an arm 104 carried thereby and resting on a portion of the feeder mechanism- B and adapted at times to move at its free end 105 into aposition where it engages or intercepts rotation of the pawl 96', moving it out of env gagement with the adjacent pin 98, thus un lsrs coupling the sleeves of the shaft 91 whereby operation ofthe raddle 50 will cease since shaft 9" will not be driven. As a result, it will be seen that when the speed of the feed rolls diminishes for any reason, the clutch controlling its drive is automatically thrown out of operation and which clutch will automatically be thrown back into operation upon the parts acquiring their normal speed.

Another governor mechanism is provided whereby if undue resistance is offered to cutting on the part of the knives 55, their drive will be automatically thrown out. An automatic clutch. also controls this operation. To this end,the pulley 75 has a plurality of'governor arms 110 pivoted thereto at 111, each arm carrying a weight 112 which is adjustable along the arms. In addition, a link 113 is fastened at 114 to each arm 110 andis connected to a contractile spring 115 anchored at 116 to the pulley 75. Thus the springs 115 'resist centrifugal action of the arms 110 incidental to rotation of the pulley 75.A The pulley also has a clutch section 117 disposed on the shaft 51, such clutch section'and pulley 75 forming aunit which is loosely mounted on the shaft 51. A loose-intermedi ate'clutch section 118 is also disposed on the shaft 51.; and it is adapted to-engage a clutch head 118a lixed on/shaft 51'. The arms or' links 113 by means 'of pins 119`are connectedg so that the centrifugal action of wheel 75 will .control engagement of the clutch section 117, 1'1'8 and 118, the clutch mechanism being of mately and frictionally contact with the clutch section 118HL thus clutching the driving wheel 75 with the shaft 51 and causing the latter to operate. Should the motion of the driving member 75 diminish, the governor arms 110 will move toward the shaft and the reverse action to that traced will takeplace,

thus disposing the parts in loose relation without sufficient friction between clutch sections 118 and 118,a to drive the latter and accordingly shaft 51.

It will be seen that the two governors employed act independently of each other. The reason for such a construction is to enable gradual cleaning out of hay from the feeder. For instance, the cutter knives and feed rakes start first, which takes the hay from the top of the supply on the raddle before it enters opening 12, and then the raddle and lower feed roll will start when the cylinder speed becomes normal.

In order that access may be had to the various parts of the mill, for inspection, repair or the like, a vdoor 120 is provided adjacent the top thereof being hinged at 121. Likewise a door 122 is pivoted to such casing at v adjustment of the feed bars 60. Such feed bars 60 are preferably toothed as shown at 125.

' Various changes may be resorted to pro?I vided they fall within the spirit and scope o the invention.

I claim as my invention los 1. A feeder mechanism of the class de- Y feed roll and feed bar will simultaneously be adjusted.

2. A feeder of the class described comprising a crank shaft, cutter members carried by the cranks of said shaft, links pivotally connected to the cutter members and to a fixed part, feed bars pivoted to the cutter members, links to which the feed bars are connected, slidable blocks to which the second mentioned links are connected, a feed roller carried by the blocks, a material feed meniber beneath the cutter members and bars, and a feed roller coacting with the first mentioned feed roller.

3. A machine of the class described having; feed rollers, feeding means to move material thereto, and clutch means operable automatically to cease operation of the feeding means upon a decrease in speed of operation of the feed rollers.

4. A machine of the class .described having rst and second feeding means, and clutch means having a centrifugally operable part to cause automatic cessatlon of operation of 25 the first feeding means when the second feeding means operates slow.

In testimony whereof I aiix my signature.

ALBERT L. VEEDER.

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