o4S212 (Mill equipment ,
improved types) *
SMALL SAWMILL IMP
PRACTICAL POINTERS TO FIELD
.T
CIES
The following are descriptions of three types of home-mad e
turners and accessory deck equipment as amplifications of equipmen
ble from manufacturers of sawmill machinery .
Bar Kicker (fig . 1,A) .--This consists of an upright metal ba r
three teeth welded to it spaced approximately 2 feet apart, a guide an
roller, and a base member as indicated by the sketch . The metal rod attache d
to one end of the base and approximating twice the length of the upright ba r
is anchored beyond the track . A chain attached to the other end of the base
is connected to the hub of the rear-axle assembly of an automobile . Power
!' Its
m a pulley on a line shaft by belt to a pulley attached to th e
&sin s
6r
-t
c
hti .
.
,_ ate1
Cr
plying a
*mike to tl
.ti r .
is , I sikn, • ei
r
' n the ri m
(fag, l,dA,IIli br
t%a Is
i cS 4mqk chain drive for the
rocker
' if .'-43*14,WAY. *.404i
shown for the belt
power . g~
C
re Iiepni ~ . '-,R) .
-I .,,$I bk Turner,-4ons i cr4ia oir Al, 41kil-mOlk-Ap. r4ki
one end we
•tlhaft 46ii having a pi$
ook omeic 1 r 44 >U M
to the o
with cams o~ib ~+YIDI . shaft e1ev .t$ be cum* as
transmission Gift of pinion ors, sprocket acid Choi ,,~ t
'The
. +s
lit
loo provide sawyer-ope n
ieck chains and
,03,g.
. .
•
'
to a
"r
!~
r
,
' ~
~
The deck chains aX -r tivated
. it
ache d
4L ;'.
powered shaft (a) with Vas.
chain transmission . The thruO 'lbw i..lika.i0sa by engaging the
gear. (d) with clutch (c) and loweroCb7 .h g g the floating sproc, ' .wit h
clutch (c) . At the inoperated
sq € ,his thrust bar, hook, and rack ar e
below deck skid level with the 1-tOWA ;j.,mg.4klitaI.t4 between the bars, A slow
upthrust of the bar is used to boost the r
t.
Da, -t - he carriage, and
the hook thus remains cradled . TO turn tilt lag dh
v > gick upthrust o f
the bar propels the hook into the piltitio¢i i
4on the sketch, Shaf t
(f) is fixed in the deck skids sso tia* its o.xd* .ip 4 inches outside of th e
!i!!rb!F the carriage bolster and i hashes below tko level of the bolster top .
Rocker-arm Turner (fi : .
to provide fo r
4 e'b.
transporting the log from the p•
1
! .
,the carriag e
loading position, placing it on tF I
ment (fig . 2,A) consists of a line =
arryindr~~
ti
three rear transmissions and main-shat I, 04.
procke'o-? .'~ I + "
Rept . No . R899-28
'
1E -
}r'
■
"See outline in Small Sawmill Improvement Working Plan, March 19 .1J,1 I r explanation of indexing syste m
t Maintained at Madison 5, Wisconsin in cooperation with the Lisity of Wisconsin
chains, rocker arms, and elevating device to expedite transferring the
log from deck to carriage . The carriage equipment (fig . 2, B) consist s
of rocker arms, actuating levers, obstacle, and bottom dog .
~ •
The mechanism bringing logs from the pond to the deck is usuall y
controlled by the pond man ; that for moving logs to the carriage, placing ,
and turning is sawyer-controlled . A master cylinder connected to th e
hydraulic brake in one hub of the rear transmission permits applicatio n
and release of the brake, thus insuring rotation or stoppage of th e
opposite hub . A sprocket fixed to the latter and connected by roller chai n
to a sprocket fixed to the shaft motivating the pond to deck chains pro vides transmission . A similar hookup of the transmission bringing logs t o
the front of the deck is controlled by the sawyer °
The deck rocker-arms rotate to boost the log on to the carriag e
when the sawyer tightens the belt by moving the roller ; the supplementary
skids of the elevating device automatically are raised by a saw-leve r
mechanism as the rocker-arms are elevated . The rocker arms return to th e
position below the deck skid level when the roller is released . A counter weight may be necessary to insure this . One end of the rocker arm serve s
as a log stop when the arm is at rest position .
The carriage rocker arms rotate to boost the log off the carriage ,
and turn it so that the face last sawed is down when the sawyer returns
the carriage to the position where the wheeled member (e) (fig . 2, B )
attached to the carriage frame contacts the obstacle (f) . The obstacle i s
so attached to the track supports that the tapered end is about 3 inche s
from the inside of the track and the other end approximately 9 inches ,
with the over-all length being approximately 2 feet . It should be far
enough from the saw to insure log clearance when the latter is turned .
Members (c) and (e) are joined to (d) by ball-and-socket joints from the
steering mechanism of an automobile . Member (g) is a bar having tw o
insert teeth welded to the free end and pivoted at the other end to th e
carriage frame . A cam (h) attached to shaft (a) brings the teeth in con tact with the bottom of the cant, and this expedites turning when (a) i s
rotated to lift the rocker arms (b) . Shaft (a) is fixed to the carriag e
frame so that its axis is outside of and level with the toy of the fram e
member, thus being 2-1/2 inches inside the bolster end .
Contributed b y
C . J . TELFORD
Small-mill Specialis t
August 1951
Rept . No . R899-28
-2-
L
i
r
-r
zM
88ogo
Figure 1 .--A, bar kicker ; B, hook-turner .
Figure 2 .--Rocker-arm turner . A, deck equipment ;
B, carriage equipment .
z x eeasl F