USRE12534E - Worth - Google Patents

Description

No. 12,534, REISSUED SEPT. 25, 1906. D. A. & J. P. STEWART. STRAW CUTTER.

APPLICATION II'LED HAB.22,1905.

5 SHEETB-SHEET 1.

No. 12,534. REISSUED SEPT. 25, 1906. D. & J. F STEWART.

- STRAW CUTTER. APPLICATION FILED MAR.2 2,1905.

5 SHEETSSHEET 2.

7 Lwrontors.

;i Z QM Witt/0s s as.

No. 12,534. REISSUED SEPT. 25, 1906.

D. A. & J. P. STEWART.

STRAW CUTTER.

APPLIOATION FILED MAR.22,1905.

' a snnms-snnm a.

With/66a 05 In/ WEN/$013 H.(IM fiw a .r'dlmpvfi W 2. MW

REISSUED SEPT. 25,1906.

D. A. & J. P. STEWART.

5 SHEETS-SHEET 4.

3 @N Q Q. 3 n @w t 9 a? w WK QM n w m a mh 6 m g No. 12,534. REISSUED SEPT. 25, 1906. D. A. 6: J. F. STEWART.

STRAW CUTTER.

APPLICATION TILED MAB.22,1906.

5 BHEETSBHEET 5.

UNITED "STATES PATENT OFFICE,

DAVID ALBERT STEWART AND JOHN FERGUSON STEWART, OF MOLES- WORTH, ONTARIO, CANADA.

Specification of Retained Letters Patent. Roi-sued Sept. 25, 1906.

Original Io. 'nsa'm. had in; 3,1po4. i a ines at reissue filed March 22,1905. Bari-l m5. 251,640.

To all whom it may concern.

Be it known that we, DAVID ALBERT STEWART and JOHN Fnaenson S'rn'w'Aa'r, of the village of Molesworth, in the county of Huron and Province of Ontario, Canada, have invented certain new and useful Improvements in Straw-Cutters, of which the following isa full, clear, and exact description.

This invention relates to a combined threshing-machine and straw-cutter in which the strawas'it is discharged from the delivery mechanism of the threshing-machine is received by a conveyer and automatically fed toward the cutting mechanism, the straw according to the adjustment of the apparahis being delivered either cut or uncutto the mow or stack.

As the straw should be compressed into a com act mass as it is fed from the threshingmac he to the cutting mechanism, it is a visable to employ two revoluble feed elements having their contiguous surfaces moving in the same direction and preferabl converging from'the delivery part of the t reshe ing-machine toward the straw-receivin part of the cutting mechanism, so that suc eleousl ments during their revolution will simult anecarry the straw toward the, cutting mec anism and compress it into what may be termed a solid mass and firmly hold it whilethe cutting-knives are operating 7 against it.

The'nvention consists in the construction and combination of elements hereinafter de-' scribed, and particularly pointed out in the claims.

For a full understanding of the invention reference is to. be had to the following description, setting forth one means by which the invention may be carried into practice,

and to the accompanying drawings, illustrating the same, in which Figure 1 is a perspectiveyiew of the cutting and sharpenin mechamsm a ortion of the threshing-machine, and the fee mechanism for automatically conveying the straw from the threshing-machine to the cutting mechanism and compressing it during its conveyance. Fig. 2 is a lon tudinal section through the same with the eed mechanism ositioned .to deliver the straw to the knives. Fig. 2 is a vertical section taken on the line a a, Fig. 2. Fig. 3 is a-view similar to Fig. 2,

showing the feed mechanism positioned to deliver the straw below the knives. Fig. 4 is a transverse sectional view through the stationary knife and the knife-su port. Fig. 5 is a perspective view of the ad iusting and driving means of the sharpening mechanlsm.

Figs. 6 and 7 are detail views of the same, and Fig. 8 is a perspective view of one of the straw-guards.

Like numerals of reference refer to like parts throughout the specification drawings.

The straw is discharged from the strawdeck 1 into the throat between the revoluble feed-belts 2 and 3, located at the delivery end 4 of the threshing-machine and having their contiguous surfaces movable in the same direction and converging toward the cutting mechanism. To e ect the revolution ofthe feed-belts, two suitably-driven shafts 7 and 8 are journaled in the sides of the threshingmachine, the shaft 8 being preferably located in rear of the straw-deck and below the plane of its top surface and the shaft 7 above it ata sufficient height to allow the straw to enter the throat-opening between the two shafts. Mounted upon the shafts 7 and 8 are pulleys 9 and 10, respectively, around which are revoluble the feed-belts 2 and 3, the feed-belts being also revoluble around the pulleys 11 and 12, mounted upon shafts 13 and 14, journaled in the side bars 15 and 16, projecting rearwardly from the delivery end of the threshing-machine.

As shown the drawings, the side bars 15 and 16 are supported from the shafts 7 and 8, and the free ends of these side bars converge to effect the convergence of the feedbelts 2 and 3, and journaled in the side bars 15 and 16 between the pulleys 11 and 12 and the' cutting mechanism are compressionrollers 5 and 6. the shaft 14 is a sprocket-wheel 17, and mounted upon the shaft of the compressionroller 6 is a similar sprocket-wheel 18, and revoluble around the sprocket- wheels 17 and 18 is a sprocket-chain 19, by which motion is transmitted from the pulley-shaft 14 to the compression-roller 6, the compression-roller 5 being similarly. driven from the pulle shaft 13 by a sprocket-chain 20, revoluble around similar sprocket-wheels 17 a and 18", mounted upon the pulley-shaft 13 and the shaft of the compression-roller 5, respectively.

tioned,' asshown in l-and2 of the w- 'Wh'en itis'desired to cutthe' straw, the

feed-belts and com ression-rollers are ,osi-

ings, with th secured to 'he'stationary-knife .supports 21,

which form part of or are rigidly connected tothe main frame 22 of the straw-cutter, so that the opening between the two compression-rollers'may be maintained at a higher extending beneath the stationaryer-r21, and passing through the plate 24 and jhestationarydrnife support21 are faste 'bolts 25, by which"the plates 24 are detac ably fastened to' the stationary-knife support to maintain. the sidebars in their adjusted elevation than the'plane of the top surface of the stationary kmfe, 23, mounted on the 'stationary-'knife supports '21. Each of the lower sidebars 16 been projectiniplf'ate '24 m e suposition. To compensate for any variation '1n' the depth of the uantity of straw passing between the feed b'e ts, it is advisable to permit the upper feed-belt and cmpr'ess1on roller to automatically adjust themselves to the'lower feed belt and lower compressionallowing om their jquislte tension or pressure of the up er fee-dbelt and compression-roller against t estraw,

movable gui'de rods .26 are connected to the J upper side bars and movable through corre -spon'din'g apertures in thel'ower sidebars 16 and these ide-ro'ds are fitted with tensions rings 27, caring a ainst the lower e es of t 0 side bars 16, an nuts or other ho ding means 28 on theguide-rods below the side bars.

straw being delivered fromthe straw- 2 and 3, as above described, is carried toward jthe"0 0mp 1eSSiOI1 rollers, which grasp and feed it toward the cutting mechanism. As

' "'opem'ngbetween the" feed-belts where the straw is delivered to it of such dimensions'as correspond with the capacity of the threshing-machine, and it is necessa toso =an-an ipressthe straw into a compact dlive it to the compression -rolls, by which it is further compressed before deliver-.

'the straw'when it-leaves the deck'of' the threshing-machine is in a'loose' and'bu'lky condition, it "is advisable tohave the throate the fee.d'beltsthat thel jr w'l com-.-

ingjit to the cutting mechanism, so that'the cntting dnechanism may pro erl' perform thefunction'of cutting it, and or t at reason the belts-are arranged to converge toward the cutting mechanism, and to com ensate for .'any 'increase'a'bove the normal e th of the s'traw'when" compressed the fee i-bel-ts'fare g lower side bars 1 6 temporarily- "shown in Fig. 3, w ere theyare he] 'projectingstops 29, attached "to theupper side bars '15, coming into' contact with the top surfaces of the knife support'2 l, the stops away from the upper feed-belt-an com ress'ion'-roller,--the tension-springs 27 .yiel ing su'fliciently to permit pf such move- '3. The upper I to the uppersi e bars =,'and the lowerguar'd,

dy before each permitted toradg'nst-themstltes one to v the other, as hereinbe ore and hereinafter described, without, howeverf: decreasi the pressure of the belts against the straw. hile the feed-belts are positioned to deliver the straw tov the cutt ng mechanism, they are 'mainta ned as shown in Figs. 1v and 2; but should'it be necessaryto deliver the straw uncut the plate 24 is detached from the stationary-kmfe support 21, so that the side bars 15 and 16 ma move into the sition d by' the 29 being'so 'arrangedupon the "side bars'15 that'they will when in contact with the'knifesupport 21 osition-the compression-rollers to. deliver the straw below the stationary knife, from where it is delivered'to' the mow, stack, or ground. When; thd'fedi-blts-and compressioni-rollers are' in the positionshown in Flg. 3, the "whole weight of their free ends is sustained bythe stops 29,1'1esting-u It the knife-support 21, and-when the deptof'the straw between the feed b'elts" is sufficient to require their separation the lower feed-belt and lower compression-rollers are ressed upper ment. To directthe' straw int-o he throat between the feed-belts, the'appar tus -isYfitted with straw-guards 30; each consi'sting of two guard-sections 31 and "32 having over apping side plates33 and 33-and inturned? tie and 35, respectively, arrangedv aralle with the adjacent'surfa'ces of the fee --hie lts2and ard sections3l are'attached sections 32 are attached to the lower side respectivel within the sideedges of th'fee the's ace between the feed=belts- By In I bars 16, with the flanges-Maud 35 projecti deck 1 into the throat between the feed-belts belts 2 an 3 to prevent the straw'escaping from between them as it is'fedtothe cuttin "mechanism, the ends (if-the side plates'33 and 33 contiguous 'to the straw deck fitti=ng tightlyagainst the sides of the" threshing-machine, so that the straw cannot pass fromthe' threshingqnachine except into and through a,

ing testra'w uard in two'sections-andattaching one 0 them to the upperifeed belt side bars-and the-other tothe lower' feed-belt side bars it is possible for-the straw guard rzo sections to movein conjunctionwith the feedarin s -37 the hubs 37 of which 1 are mounted upon and irevOlirble with a shaft 38, "jour- 'naled' bearings 39, connected to" the main frame j 22. The shaft 3836s; provided-with a "belts as they'adjust themselves'relatively to -each'other. v Y

driveulley'40, to which motion is transmitte from any suitable source for the purpose of revolving it and the rotary knives at a high rate of speed. As the continuous use ofthe apparatus will dull the edges of the rotary kmves 36, it is necessary to employ a sharpening attachment which can be moved into and out of enga ement with the knives 36 durin their revolution to sharpen their edges. his sharpening attachment consists of an emery-wheel 41, having its shaft 42 journaled in the arms 43 of the adjustinglevers 44, hereinafter described. '-Mounted on one end of the shaft 42 is agear-wheel 45, meshin with a corresponding gear-wheel 46, revolub e upon a stud 47, ro ectin from the side face of an adjustin ever 48, ulcrumed to the main frame 22 t )y means of the fulcrum pin 49. When it is desired to rotate the emery-wheel 41, the lever 48 is turned upon its fulcrum 49 in the direction indicated by arrow in Fig. 1 of the drawings to move the gear-wheel 46 into mesh with the gearwheel 50, mounted to revolvewith the knifeshaft 38, and by moving the adjusting-levers 44 in the same direction the emery-wheel is caused to engage the rotary knives. To maintain, the longitudinal axis of the emerywheel shaft 42 concentric with the axis of the gear-wheel 46, the stud 47 is projected beyond the side face of the gear-wheel 46,,and fulcrumed upon that stud 47 and upon a correspondin stud projecting from the opposite side 0 the frame and alining with it are the adjusting-levers 44.

To compensate for the wear of the rotary knives 36, it is advisable to rovide for the lateral adjustment of the stationary knife 23, and this adjustment is effected by forming in the stationary-knife support 21 slots 51, through which extend the adjusting-bolts 52,

holding the stationary knife to the support,

rect the course of the cut straw from the ro tary knives into the blower, a deflectingplate 58 is suspended from a hinge-rod 59, supported from any convenient part of the apparatus, and such deflecting-plate 58 is so located within the blower-casing that the airressure and straw within it can only find re ief by passing through the blower-pipe '57. The blower-casing is provided with a flange 60 in rear of the deflecting-plate 58 to direct aving thus fu ly described'our invention, a 7

what we. claim as new, and desire to securev by Letters Patent, is

the uncut straw intothe blower as it is de-' 1. The combination of threshin mechanism, cutting mechanism, and fee mechan-v ism interposed between the threshing and cutting mechanism comprising a shaft located above the deck of the threshing mechanism and in rear of the same, a air of arms mounted in said shaft, a secon shaft journaled in the arms, pulleys mounted on both shafts and belts carried by the pulleys, a third shaft located below the deck of the ,threshing-machine and in rear of the same opposite to the first-mentioned shaft, a pair of arms mounted on the third shaft, a fourth shaft journaled in the arms opposite to the second-mentioned shaft, pulle s mounted on both shafts and belts carrie by the pulleys, the belts. all having their contlguous su aces moving in the same direction.

2.,The combination of threshing mechanism, cutting mechanism, and feed mechanism interposed between the threshing and cutting mechanism comprising .a shaft located above the deck of the threshing mechanism and in rear of the same, a air of arms mounted in said shaft, a secon shaft journaled in the arms, pulleys mounted on both shafts andbeltscarried by the pulleys, a third shaft located below the deck of the threshing-machine and in rear of the same opposite to the first-,mentioned shaft, a pair of arms mounted on the third shaft, a fourth shaft journaled in the arms opposite to the second-mentioned shaft, pulleys mounted on both shafts and belts carried by the pulle s, the belts all having their contiguous su aces moving in the same direction, and straw-guards for the feed mechanism each consisting of two guard-sections connected respectively to the upper and lower arms to move in conjunction therewith.

3 The combination of threshin mechanism, cutting mechanism, and fe mechanism interposed between the threshing and cutting mechanism comprising a shaft located above the deck of the threshing mechanism and in rear of the same, a air of arms mounted on said shaft, a secon shaft 'ournaled in' the arms, pulleys mounted in bot shafts and belts carried by the pulleys, a third shaft 10- 4 cated below the deck of the threshing-mawith reference to t chine and in rear of the same opposite to the first-mentioned shaft, a pair of arms mounted on the third shaft,a fourth shaft 'ournaled in 'the arms opposite to the secon mentioned shaft, pulle s mounted on both shafts and belts carri having the contiguous surfaces moving 'in'the same direction, one of said belts with its arms being automatically ad'ustable with reference to the other belt, an tension means con-- nected to each pair of arms to cause the belts to maintain constant pressure upon the straw between them.

4. The combination of threshin mechanism, cutting mechanism, and fee mechanism interposed between the threshing and cutting mechanism com rising a shaft located above the deck of t e threshing mechanism and in rear of the same, a air of arms mounted on said shaft, a secon shaft 'ournaled in the arms, pulle s mounted in oth shafts and belts carrie by the pulleys, .a third shaft located below the deck of the threshing-machine and in rear of the same 0 posite .to the first-mentioned shaft, a pair of arms mounted on the third shaft, a fourth shaft 'ournaled in the arms opposite to the secon -mentioned shaft, pulle s mounted on both shafts and belts carried y the pulleys, the pulleys all havin the contiguous surfaces, moving in the same irection, one of said belts with its arms bein automatically adjustable he other belt, and tension means connected to each pair of arms to cause the belts to maintain constant pressure upon the straw between them, and strawguards for the feed mechanism each consistin of two sections connected respectively to eac pair of arms and moving in conjunction therewith. j

5. The combination with the straw-deck of a threshing-machine the straw-cutting attachment comprising the knife-wheel and klgfe banlandftheendless bands and disc rge-rol ers orming a conveying means from the straw-deck to the knife-wheel, of the blower having the spout thereof extending underneath the knife-wheel and a swinging deflecting-plate hinged in proximity toi said rollers for ,directing the straw into the blast from the blower located in front of the knife-wheel beneath the knife-bar.

6. In combination in a straw-cutter, cutby the pulleys, the pulleys all ting means a pair of endless aprons-{ordellve the straw tov the cutters, supports for sai a ron's, means for adjusting the supports the aprons thereon in relation to the cuttmg means whereby the straw may be .duected to the cutting means oraside therefrom, whereby the straw may either be cut ordelivered uncut at will and yielding means for holding the supports together at their ends adjacent to the cutting means. a

7. In combination, in a straw-cutter, cutt ng means, a pair of endless aprons for deli-veri the straw to the cutters, supports for sai a rons, means for adjusting the supports wit the aprons thereon in relation to. the cutting means whereby the straw may be directed to the cutting means or aside therefrom, whereby the straw may either he cut or delivered uncut at will and'yielding means for holding the supports together at their endaadjacent to the cutting means, said elding means comprising a spring carried the supports so that the said spring will be e ective in all positions of the aprons in relation to the cutting means.

8. In a straw-cutter, the combination with cutting means, of a pair of belts, means for causing their contiguous surfaces to move in the same direction, and means whereb said pair of feed-belts may be adjusted ei er to direct the straw to the cutter, or aside therefrom; whereby the straw may be either cut or delivered uncut.

9. In a straw-cutter, the combination with cutting means of a pair of belts, means for causing their contiguous surfaces to move in the same direction, means whereby said pair of feed-belts may be adjusted either-to direct of a rod .and a spiral spring on the said rod, sai

rod be securedto one of the bars and ex-,

tending yond the'other bar with the spring on'the extended end of the rod, said spring.

serving to draw the two bars together.

Molesworth, February '23, A. D. 1905.

DAVID ALBERT STEWART. JOHN FERGUSON STEWART.

In presence of MABEL Bnown, J. W. Can'rnnnn.

Images