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Патент USA US2109415

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Feb. 22, 1938.
A. M. DEITERS
POLE SHAPING CUTTER
Filed Jan. 11, 1937
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2,109,415
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5 Sheets-Sheet 1
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Feb. 22, 1938.
2,109,415
A. M. DEITERS
POLE SHAPING CUTTER
Filed Jan. 11, 1937
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5 Sheets-Sheet 2
Feb. 22,1938.
A_ M_ DE|TER5
2,109,415
POLE SHAPING CUTTER
Filed Jan. 11, 1937
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5 Sheets-Sheet 5
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2,109,415
Patented Feb. 22, 1938
UNITED STATES ‘PATENT OFFICE _
2,109,415
POLE SHAPING CUTTER.
August M. Deiters, Atlanta, ‘Ga., assignor to
Southern 'Wood Preserving Company, Atlanta,
Ga., a corporation of Georgia
Application January 11, 1937, Serial No. 120,105
7 Claims.
(Cl. 144-218)
This invention relates to pole shaping machines frame or innergimbal ll carrying annular race~
of the general type shown in U. -S. Patent No. ways 12. A drum or casing 13 having comple
1,943,649 and, among other objects, aims to pro-_ _ ~mental raceways i4 is rotatably mounted within
vide greatly improved rotary cutters for shaping
ordinary poles. The main idea is to provide
roughing cutters having associated saws adapted
to ‘cut spiral kerfs in front of the cutter blades
across the grain of the wood and thereby relieve
the cutter blades of end thrust and destructive
wear on their leading end edges.
Another aim is
to provide roughing cutters of this type adapted
for use in conjunction with ?nishing or smooth
the main frame.
The drum is shown as being
driven by‘a motor M through suitable‘ reduction Cl
gearing including a pinion ‘f5 meshing with an
external ring gear is on the rear end of the drum.
The mounting'of the drum i3 is such that it is
capable of heating movement. That is to say,
it is universally movable both angularly and lat 10
orally to follow the sweeps in a pole as it is‘fed
through the. machine by the feedingmechanism '
ing cutters such as those shown in a copending ‘
(not shown). These parts-may be ‘and prefer
application, Ser. No. 120,104, ?led Jan. 11, 1937,
ably are the same as those disclosed in the afore- _
in connection with-the accompanying drawings,
said patent, except for the fact that the driving
motor M is mounted on top of the'inner gimbal
instead’ of within the drum.‘
‘A pole P is adapted to be fed longitudinally
wherein:
Fig. 1 is a vertical sectional view, partly'in ele
means, ‘such as that disclosed in the aforesaid 1
7-15 by A. M. Deiters and E. R. Gillon.
Other aims and advantages of the invention
will appear in the speci?cation when considered
vation, showing the preferred form of cutters
applied to a pole shaping machine;
Fig. 2 is a sectional view taken on the line 2-2
of Fig. 1;
Fig. 3 is a front end elevation of one of the
roughing cutters removed from the machine;
Fig. 4 is a side elevation of the roughing cutter
shown in Fig. 3;
Fig. 5 is a fragmentary sectional view taken on
the line 5—5 of Fig. 4; and
Fig. 6 is a fragmentary sectional view of a pole
showing the contour of a cut made by the rough
ing cutter.
Referring particularly to the drawings, the cut
ters there shown are’mounted. in a pole shaping
machine like that disclosed in the aforesaid ap
plication, wherein poles are fed longitudinally
through the machine and two sets of cutters are
mounted within a rotatable drum or casing to
rotate about their own axes and also bodily with
the drum about the axis of the pole. The rough
ing cutters are used to remove a greater portion
of the surplus wood on the pole and the machine
is so constructed that the cutters follow the
45 sweeps in the pole. That is to say, the poles are
fed into the machine between the cutters, and
the machine is mounted for ?oating movement to
through the machine by any'suitable feeding
patent. and, as it enters the machine, it is en
gaged by a plurality of fluid pressure operated
guide rollers I1. Three such guide rollers are
preferably employed for this purpose, and the
arrangement is such that'they impart universal
?oating movement to- the machine, as described
in said patent. They are arranged within the
machine near the‘cutters so that the cutterswill
be caused to follow the sweeps in the pole.
In this instance, the roughing cutters are shown
as being arranged on diametrically opposite sides
of the pole near the front or entering end of the
rotatable casing. They are preferably composed
of ordinary planer heads l8 carrying a plurality
of angularly arranged blades i9 suitably secured
in grooves 20 in the head by means of set screws
21 and blocks 22. The leading and trailing end
edges of the cutter blades are shown as being
ightly beveled. The heads are mounted on hori
zontal shafts 23 which are driven by motors 24
within the casing and ‘supported on crossheads,
each shown as including a pair of spaced plate
members 25 and 26 having legs 2'! at their four
corners which are mounted in guide members 28
secured at their ends to the inner wall of the
drum. The inner ends of the guide members 28
are also shown as being secured to a small slotted
correspond with sweeps and irregularities in the
pole, such movement being imparted to the ma
chine by roller guides bearing against the pole
drum 29 which is of such size as to accommodate
as'it moves between the cutters.
est poles.
In Figs, 1 and 2, the machine is shown as in
cluding'a special design of gimbal ring in the
‘form of a main supporting frame It, within
whichis pivotally mounted a second supporting
the largest poles and permits the cutters to be
projected radially inwardly to work onthe small 50
v
The cutters are adapted to
automatically and adjusted to
ferent diameters, as well as to
sired'tapers, by means of feed
r
be fed inwardly
cut poles of dif
produce the de
screws 30 driven 1
2
2,109,415
by reduction gearing 3! connected to be operated
by sprockets 32 journaled in brackets within the
casing over which a sprocket chain 33 is trained.
Four such sprockets are shown in Fig. 2. Two of
them are employed to feed a pair of ?nishing cut
ters 3% by means of feed screws 35. Incidentally,
the ?nishing cutters may be of any suitable de
sign, but they are shown as being the same as
those claimed in the aforesaid copending appli
cation. All of the cutters are simultaneously ad
justed by means of the feed screws operated by
the sprocket chain and the chain is adapted to
be» driven by a motor 36, the speed of which is
controlled according to the feeding speed of the
15 pole, as explained in the aforesaid patent.
As shown in Fig. 1, the roughing cutters and
the ?nishing cutters are arranged to take spiral
cuts around the pole as it is fed through the ma
chine. The ?nishing cutters are spaced from
the roughing cutters and arranged behind a slot
ted partition 3'! within the casing. This parti
tion prevents the chips out by the roughing cut
ters from entering the rear chamber of the
casing and clogging up the feeding mechanism.
After the roughing cutters have removed a great
er portion of the surplus wood from the pole,
the pole is engaged by a pair of spring urged
guide shoes 38 arranged just ahead of the fin
ishing cutters to ride on the roughed surface
30 of the pole. These guide shoes tend to main
tain the pole and the machine substantially co
axial behind the guiding rollers H.
In machines of this type used for shaping tele
phone or telegraph poles and the like, the feeding
35 speed of the poles sometimes exceeds 25 feet per
minute. I-Ieretofore, special and very expensive
blades having cutting edges on their sides and
leading ends have been employed. When taking
deep cuts, such blades were subjected to enor
40 mous end thrust and Wore out very quickly at
their leading ends. The end edges had to cut
across the grain of the wood sometimes to a
depth of 2 inches and, at the same time, bear
the feeding thrust. The loss of time and replace
45 ment costs were far too great in proportion to the
output of the machine. In accordance with this
invention, the roughing cutters are relieved of
the end thrust and the cutters, themselves, are
greatly simpli?ed so that ordinary planer blades
may be used without excessive wear.
Referring to Figs. 3 and 4, each cutter head is
shown as being Provided with a pair of circular
saw segments 39 and 4B eccentrically arranged
at acute angles to the plane of the end of the head.
55 These saw segments are preferably semi-circular
and may be made by cutting a circular saw in
half. The segments are preferably secured to
the head by bolts 4! and are held at acute angles
thereto by means of spacer washers 42 of different
60 thicknesses. The two segments are eccentric in
opposite directions and are oppositely inclined
with respect to the face of the head at the junc
tion of the segments. That is to say, the teeth
of the segments on the shortest radii are most
remote from the leading end of the cutter head;
while the teeth on the longest radii are nearest
the end of the head or the leading ends of the
cutter blades. The arrangement of the teeth is
such that, as the cutter head rotates counter
clockwise on its own axis as viewed in Fig. 3, the
teeth on each segment will take successively
deeper cuts beginning with the teeth on the
shortest radii until the teeth on the longest radii
cut to the botom of the kerf. Incidentally, the
75 cutters rotate bodily in a clockwise direction
around the pole, as viewed in Fig. 2. This ar
rangement of the saw segments is important be
cause the teeth are relieved of excessive side
thrust or end thrust on the cutter head, each
tooth taking only a small cut. Moreover, the 5
saw segments cut outwardly and rearwardly in
clined shoulders on the pole ahead of the cutter
blades so that the successive teeth have ample
clearance and do not frictionally engage the
faces of the shoulders left by the preceding teeth. 10
The maximum diameter of the toothed segments
is substantially the same as the cutting diameter
of the cutter blades at their leading edges and
the cutter blades, as hereinbefore stated, are
slightly beveled at their leading ends so that the 15
central portions of the blades out slightly deeper
and produce a smoother surface.
In Fig. 6, the cut made by one of the roughing
cutters is shown on a fragment of a pole, the
roughing cutter being shown'in broken lines. 20
The pole is being fed to the right and the saw
segments have produced a beveled shoulder S.
The bottom of the saw kerf is the same depth as
the cut made by the leading beveled end edges
of the cutter blades. The leading ends of the 25
blades produce albevel cut B; while the cylin
drical portions of the blades make a cylindrical
cut C representing the roughed out diameter of
the pole. The feeding speed of the pole: is pref
erably such that the pitch of the spiral cuts pro 30
duced by the roughing cutters is 6 inches or more.
Each cutter shown will therefore take a cut of
half that width, de?ning a double spiral path on
the pole. The cutter blades successively remove
portions of the surplus wood, each taking a deeper 35
bite than the preceding one around the pole and
the ?bres of the surplus wood are severed by
the saw segments so that all of the surplus wood
is easily removed by the blades.
From the foregoing description, it will be seen 40
that the roughing cutters are relatively simple
in their design and may employ inexpensive
planer blades. Also, the saw segments may be
made of ordinary plain circular saws of the prop—
er diameter. They do not require frequent sharp 45
ening but may be removed very quickly for re
pair or replacements. The planer blades will
last much longer than the more expensive cut
ters heretofore used without the saw segments.
Furthermore, the cutters enable the machine to 50
cut poles continuously at a much greater speed
than was heretofore possible. The loss of time
for changing blades and regrinding them is re
duced to a minimum.
Obviously, the present invention is not re 55
stricted to the particular embodiment thereof
herein shown and described. Moreover, it is not
indispensable that all the features of the inven
tion be used conjointly, since they may be em~
ployed advantageously in various combinations
and sub-combinations.
60
What is claimed is:
1. Cutting means for shaping wood poles and
the like comprising, in combination, a rotatable
cutter head carrying cutter blades and adapted 65
to rotate bodily relative to the pole while the pole
moves relatively longitudinally of and parallel
with the axis of the head; and rotary cutting
means coacting with the cutter head having
teeth each spaced longitudinally and circum 70
ferentially in rear of the preceding tooth and on
successively greater radii, whereby the lowest
teeth engage the surface of the pole ?rst while
the succeeding teeth take successively deeper
cuts to produce a shoulder in a path slightly in 75
2,109,415
advance of the leading ends of the cutting blades
and approximately to the same depth as the
depth of the cut of the blades.
2. Cutting means for shaping wood poles and
the like‘comprising, in combination, a rotatable
cutter head carrying cutter blades and adapted
to rotate bodily relative to the pole while the
pole moves relatively longitudinally of and par
allel with the axis of the head, and ?bre severing
10 means comprising a separate rotary cutter hav
ing circumferential cutting edges of progres—
15
5. Cutting means for shaping wood poles and
the like comprising, in combination, a rotatable
cutter head carrying cutter blades and adapted.
to rotate bodily relative to the pole while the pole
moves relatively longitudinally of andrparallel
with the axis of the head; and eccentrically ar
ranged saw segments secured to the leading end
of the cutter head at acute angles to a plane
normal to the axis of the head with'the high
teeth of each segment nearest the adjacent end 10
of the cutter head whereby said saw segments
sively increasing radii, said edges being angularly
sever the wood ?bres ahead of the'blades. '
pitched so that the lowest edges are the ?rst
to engage the pole surface as the pole is fed past
6. Cutting means for shaping wood poles and
the like comprising, .in combination, a rotatable
cutter head carrying cutter blades and adapted 15
the cutting blades, whereby said cutting edges
produce a substantially spiral shoulder around
the pole ahead of the blades and approximately
to the same depth as the depth of cut of the
blades to relieve the leading ends of the blades
20 of end thrust.
3. Cutting means for shaping wood poles and
the like comprising, in combination, a rotatable
cutter head carrying cutter blades and adapted
to rotate bodily relative to the pole while the
25 pole moves relatively longitudinally of and par
allel with the axis of the head; and eccentrically
and angularly arranged saw segments associated
with the cutter head to produce a kerf around
to rotate bodily relative to the pole while the pole 7
moves ‘relatively longitudinally of and parallel
with the axis of the head, the leading ends of
said blades being bevelled; and eccentrically ar
ranged saw segments secured to the leading end 20
of the cutter head at acute angles to a plane
normal to the cutter head axis and having the
high teeth of each segment nearest the adjacent
end of the cutter head, said high teeth being sub
stantially of the same diameter as the leading 25
bevelled edges of the blades.
'7. Cutting means for shaping Wood poles and
4. Cutting means‘ for shaping wood poles and
the like comprising, in combination, a rotatable
cutter head carrying cutter blades and adapted
to rotate bodily relative to the pole while the
the like comprising, in combination, a rotatable
cutter head carrying cutter blades and adapted
to rotate bodily relative to the pole while the pole
moves relatively longitudinally of and parallel
with the axis of the head; and'segments of a
plain circular saw secured eccentrically to the
leading end of the cutter head, each segment be
pole moves relatively longitudinally of and par
ing arranged at an acute angle to a plane nor
the pole and sever the wood ?bres ahead of the
30
3
blades.
'
r
allel with the axis of the head; and a pair of mal to the cutter head axis with the high teeth
eccentrically arranged saw segments secured to of each segment nearest the adjacent end of the
the leading end of the cutter head at opposite, cutter head, the segments being arranged to cut ‘
acute angles to a plane normal to the axis of
40 the head with the low teeth thereof most remote
from the end of the head to produce a kerf
around the pole and sever the ?bres ahead of the
blades.
a kerf in a pole in advance of and to substan
tially the same depth as the blades, and the ec
centricity of the segments being substantially
the same as the maximum depth of cut.
AUGUST M. DEITERS.
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