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Патент USA US2410887

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NOV. 12, 1946.
|-|_ G, LOCKE
2,410,887
SAWMILL
Filed Oct. 26, 1_943
5 Sheets-Sheet l
_breng GhLOÚÁ’eI
Nov. 12, 1946.
_H. G. LocKE
'
4 2,410,887.
SAWMILL
Filed oct. 26,l 1945
.3 sheets-sheet 2
Nov. l2, 1946.
H. G. LocKE
2,410,887
SAWMILL
Filed 001'.. 26, 1945
3 Sheets-Sheet 3
2,410,887
Patented Nov. 12, 1946
UNITED STATES PATENT OFFICE
2,410,887
SAWMILL
Henry G., Locke, Jasper, Ala.
Application October 26, 1943, Serial No. 507,692
1 Claim. (C1. 143-55)
1
2
6 and to convey the cut log sections after each
cutting operation to an elevated chute 'I whence
adapted for cutting pulp- wood of substantially
the log sections may gravitate into any suitable
tree length into predetermined log lengths for
conveyance for transportation to a pulp mill for
convenient handling in shipment, and has for
the making of paper or the like. It is preferable
the primary object the provision of a device of
that the chute 'I be arranged so that its discharge
this character which will materially reduce the
end may be conveniently raised and lowered.
man power heretofore necessary in `cutting pulp
xThe conveyor 5 includes a horizontal portion A
wood and may be readily set up for operation
and an inclined portion B joining with each other
within a forest and in the vicinity of the place
10 with the inclined portion discharging into the
where the trees are being felled.
chute l. Logs in tree length may be loaded onto
Another object of this invention is the pro
the portion A in any well' known manner and
vision of a power operated device of the above
caused to move as desired `to the cutting mech
stated character which will feed the logs in sub
anism and after each cutting operation the log
stantially tree length into position for sawing and
sections may pass onto the chute ‘I by way of
move the predetermined cut lengths of wood to a
the inclined- portion B of the conveyor. The por
conveyance for shipment, the cutting mechanism
tion A of the conveyor includes spaced' rollers
of the device being easily controlled by a per
S each providedv with conical shaped portions to
son and its operation by said person also gov
prevent a log from moving endwise ythereof and
erns the non-movement of `the logs While the cut
ting operation takes place as well as operates 20 the shafts of said rollers are geared to a driven
shaft 9 journaled in bearings III. The portion B
the means forr preventing the saw- from- binding
of the conveyor includes spaced rollers II over
during the cutting operation.
which is trained a flexible element I2 carrying
With these and other objects in View as will
flights I3. The shaft of one of the rollers I'I eX
become more apparent as the description pro
tends into the cutting mechanism andi's secured
ceeds, the invention consists in certain novel fea
to a reduction gear mechanism I4 driven from a
tures of construction, combination and arrange
shaf t I5 through the use of an endless belt. The
ment of parts as will be hereinafter more fully
shaft I5 is driven by a power shaft l1 through
described and claimed.
the use of an endless belt I6.. The power shaft I'I
For a complete understanding of my invention,
reference is to be had to the following description 30 is connected to a power source (not shown)~ by'an
endless belt I8.
and accompanying drawings, in which
The saw mechanism 6 includes a frame î-9î of
Figure 1 is a top plan View illustrating a saw
skeleton formation arranged laterally of the con
mill constructed in accordance' with my inven
veyor 5 and has the shafts I5 and I'I journaled
tion.
Figure 2 is a sectional view taken on the line 35 thereon as well as providing a support for the
reduction gear mechanism Ili‘. The power shaft
2-2 of Figure 1.
I'I is supported by anti-friction type bearings 20.
.Figure 3 is a transverse sectional view illus
The shaft I'I also extends through sleeves- 2|
trating the cutting mechanism and the means
(Fig. 5) journaled in anti-friction bearings 22 on
actuated thereby to prevent the saw of the cut
ting mechanism from binding during theY cutting 40 the frame I9 and the sleeves 2l" have connected
thereto spaced parallel members 23 which go` to
operation.
make up a counterbalanced and pi-votally mount
Figure e is a fragmentary top plan view of the
ed saw frame 23’ provided with a control handle
cutting mechanism and thepower‘drive therefor.
24. The saw mandrel is journaled on one end of
Figure 5. is` a fragmentary transverse sectional
View of the journal or pivot for the> cutting mech 45 the saw frame 23’ while the other end carries
a coun-terbalanced weight. VA circula-r saw 25 is
ani'sm.
secured to the saw mandrel and may be swung
Figure 6 is a fragmentary transverse sectional
upwardly and downwardly with relation to the
view showing a frictional drive and a clutching
portion A of the conveyor 5. The saw mandrel
and declutching means therefor.
is connected to the shaft I'l by an endless belt 26.
Figure 'l is a fragmentary plan view partly in
The drive for the shaft 9 from the shaft I5 in
section of the frictional drive.
cludes a friction type clutch 2'I consisting of discs
Referring in detail to the drawings, the numer
28 and 29. The shaft of the disc 29 is mounted
al 5 indicates a conveyor, constructed to feed
in bearings 30 and 30a, the latter of which is
logs in substantially tree length up to a cutting
mechanism indicated generally by the character 55 pivotally mounted on the frame 6 While the
This invention relates to a saw mill especially
2,410,887
3
4
former is slidably mounted thereon. The shaft
of the disc 29 is connected to the shaft l5 by
an endless belt 3|. The shaft of the disc 2'| is
journaled in bearings on the frame 6 and is
geared to the shaft 9. The slidable bearing 30
has pivotally connected thereto a lever 32 (Fig
be prevented from moving further under the in
rollers 8 for the purpose of stopping the move
next portion of the log be moved into position
for cutting. Therefore, it will be seen that this
fluence of the conveyor.
Further downward
movement of the saw by .the operator brings the
saw in cutting relation with the log and at the
same time an upward pressure is being made on
the log or the cut section thereof by the block 40
preventing the blade of the saw from binding
ures 3 and 6) pivoted on a support 33 carried by
with the log. On the completion of the cut in
the frame I9. A control rod 34 is connected to
the logby the saw, the operator releases the
the lever 32 and is located adjacent the lever
24 so that the operator may engage and disen 10 handle of the saw frame‘and the weight elevates
the saw blade which brings about lowering of
gage the disc 29 with the disc 28.
the log stop so that the cut section may be moved
Thus it will be seen that the operator at any
by the conveyor onto the inclined chute and the
time desired may discontinue the drive to the
ment of the logs supported by the rollers.
device will permit one person to easily and rapid
A suitable detent arrangement 35 (Figure 3)
ly cut logs into sections of desired length, the
may be provided between the control lever 34 and
only other manual power that is needed in the
the frame I9 for the purpose of releasably secur
operation of the device'being the feeding of the
ing the control lever in position of engaging or
20 logs onto the rollers 8 of the conveyor. To facili
disengaging the discs of the friction clutch.
tate this operation an inclined skid (not shown)
A log stop 31 is slidably mounted on the con
may be arranged adjacent the portion A of the
veyor 5 where the portions A and B meet and
conveyor to assist the operator carrying out the
has connected thereto a flexible element 38 (Fig
last stated operation.
ure 2) trained over a series of pulleys 39 on the
It is preferable that the rollers be fluted so as
frame I9 and is connected to the counterbalanced 25
to readily bite into the log to assure its-movement
end of the saw frame so that whenever the saw
over the conveyor.
.
is manually moved upwardly or in the direction
It is to be noted that all of the control means
of non-cutting a log, the stop lowers into the
are located within easy reach of the operator’s
path of movement of the log to prevent further
movement thereof by the conveyor until the cut 30 station or position.
While I have shown and described the pre
ting operation has been started thereon. If de
ferred embodiment of my invention, it will be
sired, the log stop may be adjusted endwise of
understood that minor changes in construction,
the conveyor 5 in order that the logs may be cut
combination and arrangement of parts may be
into sections of different lengths.
A log lifting block 40 (Figure 3) is slidably 35 made without departing from the spirit and scope
of the invention as claimed.
mounted on the conveyor 5 adjacent to where
Having thus described my invention, what I
the saw acts on the log and may be made to
claim is:
lift or elevate the log or that portion thereof
being cut oiï so as to prevent binding of the saw
In a saw mill, a conveyor construction includ
during the cutting operation. A lever 4| is piv
otally connected to the log block 4i] and to the
ing a‘horizontal portion and an inclined portion
while making the cut in the log.
vertically slidable log stop for controlling the
movement of a log by the rollers and operated
by the pivotal movement of the saw frame, and
connecting therewith, feed rollers journaled on
the horizontal portion of the conveyor, a shaft
frame I9. A member 42 is slidably mounted on
geared to said rollers, an endless type conveyor
the frame |9 and is pivotally connected to the
mechanism carried by the inclined portion of the
lever 4| and is arranged in the path of movement
of the saw frame so that as the latter swings 45 conveyor, a frame located adjacent the conveyor
and extending laterally therefrom, a power shaft
downwardly to bring the saw into engagement
journaled on said frame, means for connecting
with the log, the block is caused to move upward
and disconnecting .the power shaft to the ñrst
ly, contacting the log and placing an upward
named shaft, means for connecting the endless
pressure thereon. A foot pedal 43 is also piv
otally connected to .the block 40 and lto the con 50 type conveyor mechanism to the power shaft, a
saw frame journaled for pivotal movement on
veyor 5 and is preferably located adjacent the
said power shaft, a saw on the saw frame, a drive
control lever so that the operator may manually
means between the saw and the power shaft,
move the log block 4U upwardly to increase its
counter balance means for the saw frame, and a
action on the log should the saw start to bind
The saw frame having the weight on one end
thereof will always assume a position when man
ually released of the saw blade being in its fullest
uppermost position so that Áthe conveyor can move
a log under and past the saw blade. Also when
the saw is in its uppermost position the log stop
is in an elevated position. Whenever the oper
ator wishes to cut the log into a selected length
the saw blade is moved downwardly lowering `the
gate so that the log when engaged therewith will
means comprising a lifting block located in the
conveyor and in advance of the saw for exerting
an upward pressure on a portion of the log when
acted on by the saw and operated by the pivotal
movement of the saw frame, in combination with
a foot lever connected to said lifting block to
augment the upward pressure on the log.
HENRY G. LOCKE.
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