Retrospective Theses and Dissertations Iowa State University Capstones, Theses andDissertations

1948

Design of a reaper for use under ChineseconditionsYao ChiangIowa State College

Follow this and additional works at: https://lib.dr.iastate.edu/rtd

Part of the Agriculture Commons, Bioresource and Agricultural Engineering Commons, and theMechanical Engineering Commons

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Recommended CitationChiang, Yao, "Design of a reaper for use under Chinese conditions" (1948). Retrospective Theses and Dissertations. 16002.https://lib.dr.iastate.edu/rtd/16002

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•C1tbe1c tbe bl:ad'lt being le:t~'thonod •nd the hw.'t4le bel:ng

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fint;tOJ.l'& to k4QP ~ho Bt~w Bt1:'At~ti. ·'fna tl•e er tbia S.Uro• ·

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tgbt•~n-tn ,ffA't\'U"f• on t.Utn. could cut :from t,wo tc0 !"our:

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f'of' 11ut"lns patn attd graa• 1n •ml7 J)ltteoa ~ oond1't1ena

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n,eYer twloo tnt:ro~•6•

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the bea.44 ~cknrO.. •o tba't theJ ~· hroktJtt off' an4 tatb.Gr-4!ld

tn'to th• b=·

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ttho bol'S-~ nlkd flt t'?10 uf.:de or t;)le nrola Md• ~e, tbe

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a ;;latt&m, $11d a hand rs~. 14• a ·Whole thta macb1ne uul not

auc~•~st'lll1.

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tact t!~at ff. vts>t1cal -,ak& ~ot;uate4 b;r ci ennk awcp. th• ~ln

~ the pl•t.t~ tt!Xh"l wh:lch titm e~t"a:!n toU •ft.or be1nc ,out. a. llls .- J'OJ:.m c~n of Aln-mott -.mnttd a ~•l ~

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• • l'i22 • u~ O~le SJ~OOOod mttehlM 1¢.h bed ,1£

reel ('M tlP~t rr~tt'l \Ut1-l end .a ~pe~.

t'.., 1826 • fat_~tek Bell. ot ta~l11-& produced t 'bo flr-st

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ln£. lttlc1V•~ ~Ch or 1i'li.1~b Wt-~ a~ut ltt '1Mh¢~ lon& M<l .abou;t.

i lIU#bee bi'cad at tbe baok. :ti. i~i-6$•t~ .a nor; 14® in baY•

:log a cmliVi.$ sovtns on l."·oll~n ,Ju~\. beh1mi tM cntt1.ng

m . bard.am. 'fth1cn catT1.S the gl;'dA to one ~:ld,o and dapo-al~

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~laced wt th machttu~s lnl:ll:t d't•:r the 1:nVGt10M of tho

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l.. The •f;pdsbt reo~eat!ng knit•~, •~bf th•·

11t4t'lM.ng SJ*•a:ln la a~lttl4 bf latn•l. ~'!on

ea we:U a~ b:7 ttUJ t~4 m•-.' ot the _.. «h!Jie •. {t1\la t'h6 lnvoatc~ h~aele ~eg-4-1 u 'tb.9 ~t vltal ot tbu •le•nt-s,. )

a. fb• tingGt• or g~• COP the klltte• 'Whleh . •~I

~•gain u the ~nt 01' cu•t.1.n&. :;. '!ho ~l.# wtJ.ttth a;1ttht.W• t;,he r~c!A 1n r~t or 'thO'

'l'•P~ ~ ht)l&l tttG b&atl• In. place ..- the

,f'tng••• hoW ~ at•lka-. .4. TbG ~tfo~ en •hten t.ho pain, falls to. 'l'l4f

~~ •~-1 1n a awatb.,

i . ~ •lA wm~l. 41l"'•tl.J' behilid tbe ~·•· whlob ~~ tho, ~hlne ail4 opeatea goes to

act:uat.~ ~· ••lne ,,.te. s-. Thtl outttlng _ _,on• ~14o of tt~ lilltt ot e.r-t,

lfhleh pRl'Jlh t!w i~D'$ tu walk an~ #titbblo

u'b:tl• i;he out-'ti.erJt b• -~ tc '1le- •t@Mng eratli. -,., It'~ 41v1de •' lllb&> ou&e~ -4 ct the •u"t.l' '.batr. -

Wb.loh d.1 vtt\aa ·$-b.8 -atM&n1 gra.l .. ~ ~ that

which 1• to be ~~e.;p~4.

!hes· pt"~lploa ee r~e~t 1n ·~n- •~:Pint; l!acb!M*

1'b.1• ·~~ll~l•l l~&.Q,per WM dcal~d GCCOJ'idl:ng to all t.htt-

to'rflgt'l!.ng ttpocU1eat~«1At. 't~i d!.ff~&lt · _ 1ft ~rt• ~• ~

sortbed • toll_.J .nu trhft t"M:ftl~ -~~11' 1• $~ sn rtpro .1.

The ~Vld ~Gt11f>7• g:e;~n tl"t.tc:~ -· U$Gd the

~1- m.etlM ~- s.b• apeo1f'toatt~~ of' the t.l"ac'tor '*"' ,. -1 tic ,. ~00-~126 ~~·:• ~bmk " · co •• . u.a.f.·' · ,;;,1 el..«iil ~f'). 450400,,. e.,,p. 1•4'1

~ ~tne ~~ed. on t}Jlts tl"d~ ·wa&: ande ~J' ·tb.e

~lggs at"A tit<'Jfa"t• C~;pora:ttm ~ iii 1e ~ Kotl•l := r-o;pe

tttta"t• 't1P• e; .. Une ~tM 4-•ignt.ld as a~~ 1•3/S

H,.f ., \ltllt equ.lpPld •1'b ,e. thl"'ottlo G'Qn~l aufl Y•tgba tor'1 ~de.

ncro • ., •• ~-. ._ ................ lJ •• ;a 1.nohtui a~•··· .•• ., .................... s J.ACn'll:• r-urtotl di:&,pla~-ematlt .... .... &. 26 cu.. tn. ~ ..... ., ... ••••-• ••W•••••••••w-•i e10l•• ~ingle c llnue

L-l»ml. dt- coo Ie;rd.tiion. . ............ j,1•·,.,.•••••'-.tente4 h!.Sh te.elon

bu1l't•ln f~oe1 agn-e,to

Lt~U.1ea;\t•ih ."" ., •• ,. •• ., ••••• .S:ploh a71tta.

tt 4tivn1o~ft "ft ~.,. :ct i • .ao to 1.w a.1. wt-.l.le tl'le '1PS:d

~ng• ts ~ ~ t<Q $600 n.1 . • ,

POJ! d.•leHh\l.nii ,. a.d~uttt• ~ww r~:t or o

en&tne.,, t.'Hl~Cl!"latl'n ·WW •ti.a ·~ ,a _.h!ne pe.7.t"ta'aing a ·ll11-

f'tinG'tten an4. tad.a arJ tbe blJ\4e,. In ti'lfJ oal.•ulatl.cm ~ t.)le

-c:ap.o.1 ,,. ot 'tho ~ ~l~, tM l'J.P, draf'1t luil• to tl4!;!1. c.-

s1detted,. Yahl• I 1n.dl•~~a that t.b& .hlsh dr&rt ot t.ha bln.O.w

~•bla 5

~ fill.l tteq,u~ in .Jotm~ perr ~o~ . ot JU.4th w- a.ft 11·• :aroot. et P1a'W ~idau

-~ lllntl•

100

150

I .. H .· 11

,,. •• l ~ - 3- '

eo 100

per fe;ot. Qf .tct.h u im po1m.a.. aa.n. on tbt• ~c. 1..4 n. •. 1• ~u!re:d ,.or a srtt1n ~1Dtkm or t~M ta:e- "14'11 at

a epee4 or t1r0 ml.lo• PS' bom',, bu1i tbe nepel' 4u1~d 1•

•omp~ttvei,, llgbti tn c ·cutrueUo:n •d ha• ao he&•l' f'1•14

whoela,., ~ o~fltOl* •lk:t •1'11 t..~tt ..,h1!'le 1u'Ua4 at

altttq eei t:u1vas t:ea ,pt;>'undtt or ~4f't;. Thia l a •b.nin. 1n

':fal11.e 6 (SMD~tle• 3891}. Al$o• 'lb• kn-ott1~ :~bcl.ta ·1•

not ~e~um:t. llue to 'b$ above n~t~., an ~tne· ·ot 1.& notd.nal B ,. wa$' pJ.1'Qp&eed to be :wt:ed as tJle ~ aov_..

'l"bel*'G 1~ a 4.loH ,~·~~ct · th1• ~ult .tth calonlstlo.u

-4• bf C~t~v (ta~,, liU) ln kble 'f.. It •111 'Pe •••11

'leb

l

··rart

~O

J'IH

') D

()V

OJ'

0.

lrf.I

at

.pa~d o

t 11

•• D

titt' llo

Q

:cco:

ra1c

lt 4•

l/4

• r?

lttg

&'

10

160

1611

1(

) l•

OO

o.aa

o.se

o.

eo

o.i:s

~

• so

4 .

.. 11.

eo

s lg

()

10

1.00

0.

04

0.;5

8 o.,

. 0.

11

Cll~1on

nao

4•1/

S? 2G

V 16

2 10

1.

42·

o.el.

o .•

"Ii

o.&1

o .

. 1ct

Jl't*-·A ..... -~~~·

t:•lfJ., ~W'P ltt'tq!J1l'~k 0£ V-le14 ~ltln#$

60

1»

.o.&t o.va

o.e.e>.r;'"~""' n nst ~·v

that ~bu table !tu.ttHtcA• o . ,s .B.a"j<:s:.t. PR~~ ot "1.dth d ·

"' .bl ~ln b~a at. ~ •PceA fit '• all6'• IJC ~~.

t~ o~pcn.~ to l.& 11~1. L• a ll!i'~c toot •!'dth of cnt .•

T~•• ealsdat1mUJ ·1fi6J'.& ~a~ In P~"1-" •~ t.hi& aehma -~k.eii ~ to ~··'!QBth

~t"k . ·- " . __ , . . -~ .! -

~ &~ ••t be -~~ ~4 lt'lg\d ~qb. to C:eJ!!f' the

total •tp:t of "th\lt. l'"\'fNJ~~ ltaolf a:ld ~~;ut 30 t(! .O . ~411

of: e-tt"t ~ll\11 and ~ n-a11tt- 'Sb& •1~h•1- ._ ~ktng: lti

the 1"1•14. I$: ~'l nftettem4111 b• •~le r~'it' h4~ et t•t• '1&$1M.

Fie .. 8 41hr.tn the g~-1 ~QJO~$ or t.Jle· ~r:k.,

J'~qr~ 3 .Md; 4. •~•the ate . .. , .. aad h'on.-tc •1ew ot the

r•per• reas.-,.ettv•l.~. tt. wa:a l:Mtlt, up t4· plpu -4· o.!thfw

1!.gb.t rlas :S'he.1 baP• er •.i•· 'td'tn a v1•• ~£ •ldng ~

-"'

l of

-

t Vt the Re

Q l;

1 1

tn. 6 • o.r

cu tor ... a~ a . . • - . :i.z

on or bar• • • ' . t ot t • •

pla ckle be pl ste • t tC 1 • f: •

c on t •• bo~ 0 t ho or lf

ct t.oc

b lt• to • • ut • • '1 lt

• ( rreoti • 1 ckl el,c! own

n t. t U;: tl • • t' 1 c-o

lt to c t. 1ng t v 1 ot b t

At Qflt) :Otl4:1 'the -al*lo b• -$ COMect.S t~..r~h a

a~t link ~e tt~ bol.l ~k le~. ThG ot:b.~ ad ct -the

b-&11 o~ l.,,e •• •t~bAd tio t t• - pl-. matt., the epeeil

ot the tJiokl• ~ Ol" ·it~ .nimbeP ~ :~~•s of "b• •lekle Ml-

pe:r' ml?ttttti or ptJJ:." f'tH>t of' tt ... v•l -of ti1ff 1~ 1ff~l• wt11 he

dl•ctt••e4 'le.ti• m -· aeot-lm ~\l-- the t.J,'1Ul .. tea:hlU ~­

~- to tb.e #lllkl-.

:rtgure, 1 i)~•• ~· ps.«t.r~• c.1:11 tu t~•• pldfOD:

11011-a •4 "• plutto• uon••1~~- bl plllfle. 'Ibo cut.ta bm:--

~ •'tacnen 't.o tm . ~t ·c4 th•, pltatt~ ~ im:to oon•

Y•!f<J~ (a~ tM .ahot"t, ~) p~'t -~ 1*011-~if. A bd D la 11:~

s. Tbe '°'~ ·COfi"f·•~ P"-" ~'~ th• ,ole•;atGfl rollf.tr G -ad

•tb' whole J.m~ ca~. ~"6 ~u.tc:t~ ~till•~ _,. ~i:v;• hJ

~· b~•l a~w and. ~'11a l'Oll.er 4n'>vo th• Uu'kttwi c~n••JOl"'J· ~

~- In~~ HA\'~~ d.'rov• t;h• oU:t• -OOl:l'VtlJ'Ol'"• 'fhe lMer ~

•l•ated Ml~- ••• t wo c.11ri~1~ .- •·tdl•r• •011-. onl r t tnat ta, tnuy did nttt ~1v• l:J,ttt o:n.1,,- ~-~t.M ttillr oanvi•• co•

"•~•· lfba b~e~,. or bolb the t.M•I' ~oll•i-· ·an4 tbe

el•v•t*4 ~llGJr •~• ad$U~·ab1e, f~ t14bt•tng t;he ean•a•

~O.U'\f~--

,.~ botto.• ar the p1.a'lto~a ~- ·•de ot ua~t •ta1 1th1•'h

••~led~ .tom'*' $1JSl• ·uicn 0~1111 •llla._

!'~ ~(fvt»nt 'he patn t~ btd.na bl~ ov•rr tho "• oz

•

• c ..

- .

0 li •

onv 10r con • ol.'

p

.la to

• oo . 25 60

e-,,/1 . . .. oo

h

at

in

a l fro) . In t

i il Bt i

hin

· ·t.on

t en

120 l 160 J._(\

l

1n Cb

r t

· O

• d •

a nor-.an

• • 1'1. 1 ) .

,.

G 1n all 11 1n n d ut~s tn t.b ,

ractl •

t t. .·~ r

1 1 •

nee

• ,. Ua

b7 <tlll h co·ntt l e ~ •• b •

t• 0 t c t.

b . b1 C:QllV qu c l

ll.

•

-n to

ron . t

·t 1 · • b7 a v t:t l

. f:

of c t

d1 -

Ol'

ttc o 1 •

on e d r the la~

.• ~ ..... ,._.A ttc lly ttlt *- •~

.er. m • . tf &e.1. V • M'M't

• - one ule ( '"''1g •: 6).,,. _ •

. o le.

htn ta.'$ .. oututt of th

th th " n bun a

1

la o

t

..

l t

•

'\rA• tunet1on or tbfJ ~ol l .& t Cl· be.cl ~ t;-t.atl.dthg gf'AJ.a

~· tho alekl'O and hold tt ap!.Mt t'.h4 $!Ck1• au:.,tl d~

the ~a.a tw.• b~ out.. 'th$ i-.a:el ~ula 'b• ·r-alll.U• lOllG>."ed

ad tUt.d tel"~ ($'~ baa~ ~o .a liv uet the .A:r 4tt;t~ d'S ecmlt't1~.. !ftle ai.u mut ·~•t.-1ko ·~be at~tns ~ Sast 'below tile bead •n4 -~no\ le••• th.f.f anla UAt1l ate» lti ts o:u"9' F~ )i't't:Gl •lat:s ••• u1tt.i. ln ~ oon1:t~"°i'ft•• or· tne l!D&l ta cthl• ~ld.tte ·tn~ •• no 4~v1atlofl. .~ other

a~d ~htnea., P1gu,H -7 •••• th• t"•ul.• the ~l au,p-

JO;P'l• md 'tho be:Ola~ t~ tba Jt$tltl . .Wtr. ~ ~ ~tap t ·w the ~l ahdii wee • llttle Mtte~

enl :r~om &"hV'D u~ tn tbla maen.tn•• It .. reel auppor:u ~- 120'\ ~lg!.4 eaousb~ the ~li'l!iS 1f0da h• thr~ ~ ot· G11~t ~fl tlte ~htO(I •s un~Jt the OfUfti-atlns eom'i1t-1on$.

2ha s tmplf) eta.n&t.i-~t:lon ot aelt-al14rd.A4 b••tns und tn tht•

~nD\e l$ ~- In .trl~ a. St•l pl.PS •• ua84 P the l"•.,1 ~'t. fft .eme· ot ttbQ

a~ ""D:l'o uppoJ?t"4 ~ '"° :Htlt•a11Slifts tlearitnp. 44Jmt-ment- t-o-1' llatqlua t~ ht'd.£91t ot t.M r-••l Wll$ ~OT1dd bl' eblf't•

iilil tbfl Shatt. ba•1~#•

row•, tfJ'lt tt't1vtng libe ~l. -. '*•• f~ the lef~ 4»'1Ye• wh•el. tfhaft of' the ·~ae~ ,liftd mt# ~-~t-etJ ~O\lgh 8

~•tlOli Jt, V~l~. !ho~ *" ttn ldl.QP-pulley to tue oaa· or

the tl~tll•~ or tth• b•lt,. J1 •~b1•"1an or 1-1\,. eh~•

tg. 7. l .. uppor-t , •

•

id

it to

t

wll V · O

t, r l,

ot .. l .t 11 n • .. lc.:l e

nt

7 .0 f' t ·h

~"'-- %" 1 J it

(1 . )

a tollo :

1~ ..

- el

po o th le

ot ~

( 1g. lO•A) c fl"O tl

· b ·lt

• 1

.....

1

).

•

(V ·-· - ·c) 1.a tach rune • l,

.. h

h

t: • l .

·· o.- 42

(b) (fl

ot t .h. c er b r !l.ar to t o£ ~

• {l 1g . l }.- •• lutch u

fol' o.r ruor 1·rv-

J cltitch 1 ror

l.l 1 tr

0) Pl • (1!1 • - 1 .... Meet.a .. Cl"

f ·""'• 11• ). t.bo b 11

c tat . knit • p . :v l: 1n er CP

tt1to on,, 1

h of

00 11 ht 't. 1

1tt p la ptn 1 lac • slli when it. 1 fl ••s .7:"1 0 an •

•

•

fiatio

n1

l CO

• ba

nd Q

OWOI

' (•

ngin

• op

ent.

H)

Two

tl'ao

tet.

......

Cata

aiv

ell

i..

F. L

arao

n

•!'&U

. ye

Sta·

fwo-

hOl"

f'•

tb••w

n --

•ri oa

Po

w4l

r t.

ue-

• 42

ot

t d,.1

..

"''tit

,C) .o -- -

lbl•

9

ede

of S

ickl

• B

an i

(•

2 ~"5

·0

l~

il)

'6

--3

---

- ,,

24.,

l.'.J. - - -

cbln

t•

12 ' ,, ''° to 40

0

s.os .a

4. - .)

4

• .e •. J ..

6. - .o

' \,.t

• 10 • • ;.

c.

1asi . or P1t n n ll o ..... ~ • .Hc·-

"h · epl•'t .

o tai ·.

(

"!.1

r :t a ot

h

bo l

•

of tl pt

d th 11

11& an

(!-• • 12 } .

to

l pln

'lAtt or

t t

t.

0

or

ll

_ r-0ll

•

to "'.oll r

•

to t c ll Con~ ol d

t.

leh ov

1 u

( } In n f t ~

c t

II

(b) In the lc~·Otld ••pwt--t 'the tl&llfJVa dl6'G1

(J'l'hSmMW.• P• 241* .1947) iwu Ut1od. T.. ilerrlvatlYe

t1'.PC: or tlen&vn Wheel. 1~· shown !n Flgutte 14. Th•

61,ae A wtth. pln la the <triver. 'the pln movea tn the •lo·fiD mi n, oauat·ng B ·ti& t~. B 18 tastftned

to t:b• #}1c..aft. of t.ho baakcit._ !rt the ftgul'"e, B

ul ll tun-.n on.-th'lrd revolntton, {W 120 dGSffe•)

und v .. t .tit.le A ak® one. etontt.btto\1& t-"&volu~1on.

DUrlnt~ tbo poi•tou et· rest. l! ts. fr1!«t'en,od. trOJrl

tur111ng. atnea 1 t• e~avc eui:tfaoe 1• 1A oantaet

1t11 the oonvaJt svf'mu~ on A· ~t.1 lllethod ••

dis:ca~ -too,. bec•us.e at't-•l' tmrntas one.-t.htl"'O.

.of' a re~olutJ:on e4 ce t.be baak•" sbOnld at-op

and m:tler.a4, n l"tte6lv:ed M i&eJ>tla tr-em tt •nd mad•

it cont.mus to 'ur-n• aumntl•• a .large Pl"••~ tonk plile• on e. pot.nt, or a am.ell oontaei area,

b•tw'tID the o.<>tteaY& $nd.. conves s-ttr.tec,ea an.\ bad a

tendeM1' ta tJto-p A ft-Oli .conttnulng to ~tll'tl.. In

,, th1a •Y tiht> machine parts ct th1a ae!'~antam wet"&

,eabtlr out- of' ordt»t.

{e) The ·thb-4 &.X,ft~:t~t t-e1n1ltd ln the etlopt$l

dfJ3!.p.. 7be d(;:stgn wh1eb .a f'b.ulll1 aeoept-1 a•

~ best ~~~' to ~ae 1 the ntohet tumtett (l~g·~- P• 24.S~ 1'94V}. ~ al"l"fltig.-

mont i alwtm Sn 1!.su:Pa »+ A ~d At ~ 1"'tnrtane4

P1g. 14.. ~~1sslon Gf Po•e to '~ nantt-ii by V&a of· Gen~va Jlb(t(tl

-() s t. • ont 'te

l nd A' • ~- .. Ireet! ana .. t1i er

c tll 1

t~i ·•ol b • ppl ,n en o tho

B ~

tlo l

t he J.:O ·1

a, 1t

ve. .. I

ta 1o () to _

I .. iJ. ., • . to p wl c 0 th

o OB will puat t l' t .

1v f! 10 tro- a ulle

roll .. bf 30 .. • •

• 1:5

An. 1addo t.U.vi.~ •114 an ontalde 41.vld• (F1g. l ,

Ifo. $} lfel'O UllG4. !"A.>th ~att• ~· Of Sh (l:Ot iron &.ll4 -~

-aoti4 £~om the •1n £~••• ~h cmo ,proJceted tw•lve tl:toh&•

!ntc t1m atnn<U.ng orcp sep~ratf.:ns lt 1n d'fa.~• or the cu.tto~.

The d1tt1d1ns; tune,2.cua we •1•¥8 to p~~ and direct th•

gra:bl at the 1~ mtd o».f1W qe ,o:t ti~e ••th to__.d t..~a

eiekl••

'the hcl~ et cu,t was. r-suiat,fJ4 ~ thtui-. 'two hoe.

Sho•• w.ee !'1u,~od '\LP!~ tru) cutt•?t b~ bf two 4t.ffewat

bolta., . l~ ttc 11&a tb• pvpoa• 1tl thl• uchlare •o ot'feot • cus

as clo:ae to th• grotmd o.~ potudble_, t~· ·t.ba «t.J.'>e.w watJ to bo

-.i&ed lt1t•l'• ~ ~ustment et t~ .h•tdlt 0£ tbe cutt.er b~ ab-we c,rowm l~vel 1'U .found ~uee:a.wy. ft1e ld\Ce• -.de b7

low caboa ttt•el ti5 r.W.ovn m Plgtn'.!G 16.,

A p .1'ec. , Qf eut U:on oa•'ln& etgh:tng aOOQt 50 lflOW1U

(i" , · 1-1 t10. 20) was t'&~'U@ad to the '.battdlea o.t tihe tNl1.\tott

t~ ba1Mo1n:s. ~ ~1ng nlsht J:at!l1t te4 ~dllng.

-..

6 . to. l.

....

•51-

uae tb .. ?'ell r. t' 91 . • OS ct g t n un 0

a cc. 0 on .. Oun t

trc ot: t rol ' . 11;' ine h 1r • roll<ir c.ould c o :-nn un

tnc 0th ul eo c n 11 eonv yor out t

ot th ) he e

it'O

t t

y, •

h t 11 r 0

prev • nt • h r

e1iz 01 1n • t 0 • r •• tl·a 0 t!r' t to t.ouc ·

.. 1 . n: · ahtnand nt h a · t !Jhoul t-e rue at

c r. rt w111

:e ut r b

utt· b h

ld tt-1 l

l. .a. o en d u.n.

et nc . a v

Ju t

1 • '2, 194 · e:t

,.

• 17.

• 1 .. 5.al

-~

conve:;or. Att~ r&a,~1nB a c•~tain <U.atattc.e-. the cutter bac.,

cu.lin1'tUJ con.v•7ot-tJ and baaket (fflQillttO to \'iO~.k, but the eAg!ne

e\111 t-an. The bel.' s11ppngu u!ated on t.be sa•e pulle7

tth1ch 1Pl• putt on ~~~ otmt~ par-t t)f tho len& ·c~kshu!t.

The cr .. nkS-haft W:11ch was ruu1e o.r nt-oel tubing •s ~upp~tetl.

by two b~tnsa at 'botth ends. Althf'Jugh !t. bad a~u~te

~tr.er~th to trmlsm1t the 1~s~ to:l1'qu-.. tt wa• not at1tt

cnou3b to restfit bending. Adding • benr:tzlg at the c.o.r.t~

~t or the aH~~hnft t;ca lde the pulley ·to J>e» 1st bending

es. :n~-ftary.

"Ebe tbt.r4 t1.el4 tJ>ia.1 'JS'ftll coti.tinued on Octob•r 16, l94B.

~"hls t1~1ai ~veA1-od that the :wcrld.ns oon<Uttcns tJOulG ful•

f!.11 th• expec,atlons or the d~1&n• · Qfil7 · tb& cut 9'•1n

nonveyed bf tbu· conv070:- ecn1lA· not cl.rep 1nto the baaket

Tith even bu.t.ts and eo tt wan not. ca:a;; to g,et. bundlAHi drop.

ping' at equal d1st$J"..cas on the gt:'1Un4 (Fig.. lS}, but tli.U

m1.g;ht bo oana~d b)" the toll0fl1ng r•a«.inru

'fhit oota # tan~tru.; 1n \the t'te1d n.-e ov-et"•cripen•d•

•helled out,. o:r 11glit •"lf,,ht a.~d of eoon l$ns;th ( abotlt l &

lntfha!l' htgb) . ~tng :reaplng the ettS: ~in nved beesu.se

or tho ~at.., nm! «!ld men. out and os.>::vled on the; con• ve:c.n~ ~o the elevat&d peat. t.lon 01" the 1nc-J.1nca plm1e or the

_outer canvas tH>nveyw,, 1t h•d a sreat t#Jn<i~ney to be bl o.wn

ott' b,- .the w1nd. It m1tr;iht be ~tter to ·u5e upper e.nd lower

conveyora (u;trunlb' tu.i~d 1n bhldo .. } IJ1$~0ed of th• outer

'

conve70J:E at th!:& an1Uth1Dre to tranaport t"h'8 eD:t gfttn l<.1 a

h1d\~ p~ . ., ·~ ti"l'"l~ rc~l thu ~rect or tbe wlrm.

l• fiWe Gl('"to'ti lllttlaftte't,ott-r feaiiW'!ee et tme •"P•!• :atal t"IUipftr_.,

nt the O~(h1 of' dealgn ct' tbl:t up-~me:nt-al sehin••

tbtt tollo111~ a.tl\rantage-s ... ~ ~ctedf tillJl$

a . -th.a t.5 n,.P. l'.lav1d ~dlq t~tor wu_lti 1u.1pplf

ontrugh pour tort ta.metlOD and nap1ng~

b. tb:J 'Cttt\o!' b.- arA 1t.• ~lvtng aJ"1ran5e~ tr~

do " n1ce· ia job us t,b&t ot a #:Ol'f~, b1ndo:t11 Ol"

combln•J

c., tho cmtit:r q-."lvu. tHiltD:fOr, as ••l.l at& the elttft&t~

o't gA:tn h~,, woull1 -ele? ~ th& cut gntn t-o a

pred1ee$! he!~tr

L the btuzbt_ c1'1,ld aeftn1te}7 tu:m """ the· laG degfl'ett

angle d~ a eetu!n thte tnttmY-•l i

•• th.G fO-ut'""'·lMh htttght ~f tbll rrhc~.fj •\lf0Ul4 help 'the

s1~klu cu-t -t-bQ. a.rep al} '-be ~tpt pla•·• J

t . cnly o. Jti.w c:luteh ·would eell~J:'\01 the ~le ~()Gp$~

and &dd ll~11~1t1' to tbs opr•ttcn ot th& ~h1ne.

2. ~ '®e-crta!D f•t:~- -or the &x~~ir-..-nt l ~pwi 1

• . ·the; tl(ltrf.ca ~t ge>tb~tttr~ the ettt sr-ain -1nto bmidlf11J

1,>t' U'fl)!). butt:# M4 bU-lt,:la

b., ~ilo 4ff'11ee ct" fie.pCt!tt!~ ~be 7bundld fi>t -t~

su1:i-1,-0:1,e ttult tl1u Qt"ei}• c.atlia reat~d t-1 tbta mtr.chbltf~

griiilll during .n nonu.l lutt-•l'etan_s season. thot.. 1 t he4 the right

h lght titid w•tg'tlt., thQn tlle etit ~aL11 ~ght btt ga.thei,.9'\ t.Bto

bundles- C'Ji~ evun h·ut;:ta ti.nd: l•~• sn4. depcatted ·bs thfJ baabt

en the g1'or..;nd at $Q:tml apr.mtn,s.. hopur wt!llt and he-1.pt

fltt~cl tt'dl de•1p.m f&1nettnna: ot the :nob.tao anti mtght ove•-coN th~ f!<ta'th~ eondl ttonc; MJ!'avttit"ablo t~ harve~t; •

a. !h~ cuap• 1 t:J of ·t'he ~per Ao~crdtng to tbil follo~ ;equatt:on gtvea bi' Fl-. o.

~! K!.bben (1930) tba capaclt"J ot th1.e ~· •a 9 Der1.ia ..

A • f'i.-W • !R· & 3 s ~ 12 -A : •'tttal eapae1t7 o£ ~nine p~ \'b>.y tn acr1'1!1

& a re.~e of travel ln .i.11.u~ ~1* ho•

if a: ll1 dlb ot t'~t1 b I'••• Th.ta r•ult. liHW o~il"able to lb& ,p•.f~• or uam 'b1.ru:teH an.4 •• ce~ta1rtl1 ~;v t1~ that or a baM stoki..

l • 'hG jl~J;,lf.i~i) 01: tbi~ %'0QUeh WM tto d~lp ll. ~~

·tc btl tUJed fol.\ b~t~eflt~ ~le• •n<l li'Hitat nn.dor the Chtnea,e

aptoul.t•ll";al c-~t1uns and tba:t ec~ld. h ~&m by a a-11

\J"ac~.

a •. onl7 tJ"~ .. n tvae~~ utl•d •s t.M powe '\:tQ1t ecn.

me·et. th& :A&ed ot ·4•11 :r:s~ tn C:b!.na.

~ 11,bou~ ·48 pot"'e&nt ot tbti food SQppty tn ·C~ ta

pl.ee ~d wh$4t. !h .. ts R sre•t~ sb.ori~a o~ l«b01J) dtllt ...

tns too ~,...v-t!~ 11ceu~.n o.f' t"lce _.•heat tl"'.:an fop an.7 ot th:e ot~· :t~L~ $1pta:~~loM.,

4 ,. 1 nea»r t~ n~~ 'bu't ~ie h.t!a m'tt yet b&M de-

;a;!gQed tl:mt niw. be Gtttaob,et\ ~ •f k1:1d et a, • atal l t~to'P.

1. L :P~~r ~t.:tr ·~~· u~G uitu1er Ch.tnru~e contU.tlon~

.Ml#~ be @lo to> out. ~"le .ttttlks ~ ab~t ·tbr•Q to :.ft;.u~

lnob•s ~'bov• u..~ ~liN>und k'Vtd~,.. to gat-~ the cut stalk$ tn'Ci0c

bmdle" ( n.~t i.tt t1e4 bu;n~} 0£ 4'\Ut•n butt• md l'--1•,. end

to dei»•1t them on ti~ lcttd b:o•td• ~~- ~11!• at r~ala

s.atU¥a1&.

&. Field t.'rlacl~ lffl:n .Ca tc tJhow ~ utitts;t1u)'to:ry

pe?-f~~ e>f th$ dmli. ~~(J;4 't'~e,pe:t-,. ·t~ wwk ot the· M•1

ct the r:n$t1ng ~chm lma# ,utt 01~ tb.11 CQ!lVaa (tonve~t"S f'or

elevtrt,.ns tl~ eu.t it~aln t:u the t~p of t.h& b•sbti.

"

7. 'tho 1.rl.'"i.lb~lm~tt;y o~ the ~p!J'tg 0£ the cut sratn

into tli~ buuket.cs CG.t:Uilrt.& un~veii buru:Ues ot bntt1;; $l'!d heaO.

:l'l.1Sht ha:v~ trem1 eo:ueed bJ;

(ll Ue.k <Tt wl'i.ltgnt tn tb11 ov~~tp~thtl 011t St"•!~

UiJl th~ wtoo blowing tlh$ O?fl'r-<:l~1ed• Utht_, 01.tt

~ln in.to dl~~er.

a. 'fho suestuitlotl !• •d:e bf the author- tha\ t~tb~

&tudtoa in tblleet1~ and depo~t..tb\t the cut grfd.n tnto

bun4lu~ bJ 'tm bruJkD~ oosll be. -4• und6~ *>:Fe :fttvo-nble

1"'-A"eait,tng c~ tt onu.

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l~le7. 1., c. li121. . l:>ell16f! of a ~ojb~an ttwuh1,ng attraeb-~•\ !'or a ~td.~ b1ndet-. r"• ie. U'~ubllsbed it .s • ...rho@.! , • Iowa nt t Golle-g,e . b.,~ • Ai?.UJft• Ion.

tu., Y. ! . lS4'7. Dttnlgn an4 e:~Mt..~tt:ion 0£ • .a.mall t:r~c~ fe!" Ch\AQtlG t.-mtng. P• 8,t; 14-81. tlnpU:lill$bed ft . s . ~1.s,. Iowa ntata Coli.&* It1b;ra3. ~· I)~ I<>••

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