Methods of loading lumber at the rear of the mill

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Material Information

Title:
Methods of loading lumber at the rear of the mill
Physical Description:
Unknown
Creator:
Telford, C. J
Forest Products Laboratory (U.S.)
Publisher:
USDA, Forest Service, Forest Products Laboratory ( Madison, Wis )
Publication Date:

Record Information

Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
aleph - 29311434
oclc - 229916970
System ID:
AA00020565:00001

Full Text
.4S241 Conveying to pile* FOREST PRODUCTS LABORATORY t FO-I I SERVICE
4 / U. S. DEPARIMLNT OF AGRICULTL P1.

SMALL SAWMILL IMPROVEMENT
PRACTICAL PO INI R.ER TO FIELD A(-(. I Li

;_. --ODS 7' TC L > -_'-: '. ._ .-, 7 -_; .-.- T __i ,

Sevral m1onthc s which poruit aore orderly handlin of l:f.hr 'it '
the saall s1 ril vLrr nt or 'e;onc ral adoption. Dc-p ni n u on prou :i :: v-
ume, one or another of these methods appears well suit ed to v rious t,'' of 0- !
ills. Thi, sc mtnods rc i.n 2idition to the onc described in c reviow .or of
this scrie s (S2. .,41.....w*) w'ich h s proved effective 'ch.ro niho" i ;I
":rds do not rci rc extensive tr ack way.

Lumiber _rc .--MiLis built directly on the ".d c'n se th. lu...c ro
method, which permits roupin-: of ite.,s -y species, t ickni -, widt., .v I: t., or
:.... ,.t the :iill instead of t the oiL1. A series of roli: cxrriL t- ..' t.r out
the rear of thi- _.ill, nd on: man Iles it, by required it!::., o. sp:ci,! props
(fit;. i). Spacir* between prous should be ad. ux tc to er..;t tackin., ,a;on
trick or b und.er under th.- lo d; t.e -,.roo is just hi;h enour so hat th1 vwicl's
bunk contacts th load about an inch -hkcad of the pro-p, t., !rop itself in
placed about one- third tie2 len th of the load fro.. tif fro- ::d. About o 'C board
feet make a loa.


The bum..r or other two-whencled vehicle is back.d under
goPe it >-.'t ahrd of prop. -:. load is cnaincd to th bunk-
standing on th. front cnd to minimi:e. dr'-g, thf bum.r r is ;
to fall forward. The back of the lord drs.Ps on t_.e ground.
single horse can usually move production fro. mill to Iil
in a quarter-mile of the mill.


tem load so to i: Oon-
*nd, with t1u- dVriver
t ed, cousin te prop
One th. c i2vi2 t
.ere the ya'rd ip "ith-


Rolls.-- For mills built off the ground, -, silplc y> t tffctiv eto to
handle lo"ds .p to 1i Ioard feet utilizes an inclined roto.. .1 4 (4i.
2). 7- pl_ toris incli from ill1 to truck is 1-1/2 in4hs in 10 t, 'uth the
rear about 2 incrhos above the truck bed. Three wood -' dia-
meter nr.6 7 i'fet lone', ace blocked on the s-ids 5 f', b,'" :. aru
required, the pl tfor... i: eixtende to carry several Ui 1,. i
the load to tlh truck, the vehicle is plced oposit the lod sA tha. st
boards aill clr'.1r tae '. 1U tfou.. when the lu~n.er b' b ; J ^j rue: A
4" x 8"1 71 ti.:_r is placed o tor t ni ck bed about la f t
the 8-inck face on th. truck.e . 3-incch roll r is: acd Just the e. truck
bed, the blocks ar tken froem under th., rollers suc.:'rtin tc load, f.ri t.. c
ra vity .ovos1 te lo on the true'-. "s it 7. x "W or' fj. of n d
before the rc,,r of te lo o1o drops off th,,, platfor ., .d
with the :-inch face a ainst the truck b7 d to .,i..ix 7h shock of : .. .


Lor-in_ Scaffolds. --VI ri
ground, so ti-t a vehicle cin
(figs. 3 and 4) are suited to
figure 3 but for li hter load


,tions of devices to .a ort loudl. cl'.1 r
be backed au:er and the loe1 ( iced up '
.ills built off th a rou-d. (On.- very lik0
.s laqs bo_:n previously doscribe in .r,.


The type shown in fi-._'c 3 is used for lods of 'tbout 1I board feet ;o
a truck o2 w, :, rcl tivc. short distances to the i rd. Jo proupin' r ua
mapc: at the mi.l, other hen some sortin of like items within the o; ly
R6q16
IMaintained at Madison, Wisconsin in cooperation with the University of Wisconsin.
*See outline in Small Sawmill Improvement Working Plan, March l1'3i., for explanation cf indexing system proposed.


















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tvo .i. n tr -ic'oft :na pile h>. pro uctiondt is iro... '." v'r il.' A"
t rc i.cr T 2ou d ii o' ro'd. b d in" so it-cli th t, o(
ar hi 70. 1,jr u, d link, olf t .. .. cl
tw(en s: orts (r), th reair .nd of h trh c t, o if I'ui ''f*;,
buiilc, cn c tic lo''d of hu.1,r ju.t :h-cr!i of s o orit (b). -':s t. .-.
to b'c', the lo", is lifted cl' .r of sc 1or; (), ;o f ss orrs () r 1
pivotini on tie.. i:.I s. if truck "o IE, ui do, c:r s. :<,.i.r. "s, ;:.ust b
Fs to s 1 Lcrt tlcc la:-.d :::on.; t 6 ... off ( c
from unl 'r ti c l. e' > Uh' i t: .. b: t'h:"', r":: r cs (a) .;d (1:) ,.'i l i
the trvx cl : i,- It;:_:th or' disrr.cc, 'beit' 'Kupr tn' 'K ... >" oj'.. L ".z 2::; "-h; r tjL
support ( .) ic 2 ,.l t d ti c c r t c c. .. o. i i ''. L .L
t.kc n c i tz.....


and ia"li :
tra ilr :
cnout-" ix



port lox':
.,s t
it -" ": c "/0i '"


2. "co .' i' '01' is s 1 *or I0ru c 1 r lo"
:i,:l* lc.. hidLp. -=he >lo' d I: vunortod to just cl~
-n rIc rr I c; -hd under. ~-h: drivcrc' is *',-nkd
.clin>- L-.'cn to :.c: ;to thLe tr' iler oi:k "'*itd tht' lo"
d . ..c i "' ' b L ; i n- ,-. > s ' r ( ) T j _c' "i
-- 2 o2 ( ) ; lift c> t., iK :1" r, '.-o r

.. -:. i -; h '.".o.~, 2 t h- t. t .. -
tc tP "<::cL, :< i ., r-< -


d!s of *,E- "'o'
'r th. col Ft
n. r 1h.: lo





I:g.


Sli.- S dids.---.o h. ci>ic tio:.s sho'n in i. '< .. f"r ... -trailc r
loads of 4. %ord feet ..2 r lativly ioni: h-'u>_. -oa u':,' is pilS '0cao
skids (a) to 'a a1 ,i th sij tad tc "1nc c .. '. .. .. ... lc
iron ,,'aid : (2) c wv th; loao "" cdL frohn hi. i 'c. 'o a : h
"cross '. : t c r is cor t t. c ai s (c) -., . *1 te t C
load-d v" r 4 J .Jso o'~i.. '... t11Kdi.'2 r f '
1 trrilo dro : as- VT o \ i K '' K., rd4- 1 1 .ic n' i 1 :' ''.- i o "_, ''..i > "' : to
cl*ar 1 r l' > 1 r by D At 1i in ). o r' i 1 c c

thu sI s :: I Ko Kuo' i' t. bolst>rs rg-t>.r tIK. 9C u Df
L. Cvcd '' t,-a .. *"i 1 t 7' fcx' -* 1' -
loedloaKd i" .d '" nolst nr t d' -: r: >a '1 I. i

lenI. th-.i:- ':a :id',ra ,*', v, ra.! io:ds can ha st c,.. IL an"inot rrr .a' tl a.
tra-ck schz.il*.: -;h .. *rue- driver or ~elper, onaur' t, the: ".'..' t -a .'ii-a.e it: tk, .- a

,ng i t tt r'l!-1,' th"K rhids >b1 Do'-0er "- r "'- '.ifii .. io' ;.t'. *i.
over: tn cr'1, 1


fixed *.-a' on:, of r'1iro., : '' LL', ""c... j'" a L n t -'- 1I t th< 2vc2r-' .
v'iAth (7 t' ) "-'cross t ',', ::'' fr'... (fi 1 "

of t e ..i 1, .e.au oac l s' t't"h r il .. .::. r'..c'. ''.s. :; o :"



gap. A x' i a >. a. ch <. r .. of .2' a i C. r c:D n 0 11 --L
are c.. u't i. t., I rd l .to 'r u-'t. At eK :1 d . :., rails



iA d.. .it.. th .; .rop.r sp' ci. to ra::it r-n i : tr'a ki. -" :: 'hi," ''.'
off t+he n li, tr, c,, six.; Jacks ad" winch as c -% L.1-0

~~C"'so to ht J -u .. .. .fo




o I 1 t1a Ka' U - or 2
viducd t te 11 roier spi, to -(r:ait runr.jun tE i:
off th(e t< tz 1~_. isn dnk ~ .., i .L



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sIDE VIEW OF PROP


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FIG. I
LUMBER PROP METHOD


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FIG. 2
AICL/NED PLATFORM AND ROLLERS


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