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Патент USA US2412704

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Dec. 17, 1946.
4; c. JAQUE'S
2,412,704 ‘
PORTABLE SYAW
Filed Feb. 18, 1946
3‘ Sheets-Sheet 1
JOHN C. JAQUES.
IN 11 11A 1 uk.
B V.
ATTORNEYS
D?i. 17, 1946.
J_ c_ JAQUES
‘
2,412,704
PORTABLE SAW
Filed Feb. 18, 1946
3 Sheets—Sh'eet 2
39
43
JOHN C. JAQUES.
INVENTOR.
' ATTORNEYS
Dec. 17, 1946.
J. C. JAQUES
2,412,704 “
PORTABLE SAW
Filed Feb. 18, 1946
3 Sheets-Sheet 3 ,
JOHN C. JAQUES"
INVENTOR.
ATTORNEYS
Patented Dec. 1:7,1946
2,412,704
UNITED sures [PATENT OFFICE
PORTABLE SAW
John C. Jaqucs, Denison, Tex.
Application February is, 1946, semi No. 848,351 .
8 Claims. _ (Cl. 143-43)
2.
This invention relates to new and useful im
provements in portable saws.
,
One object of the invention is to provide an
improved portable saw of the type known as
‘
thereto at it. [See Figures 6 and '1. The mem- '
one-man DOWEX‘ SaIWS.
Another object of the invention is to provide an
improved saw of the type described which is
compact and simple in construction and wherein
the load is substantially equally balanced for
ward and rearward of the transverse supporting 10
axle, thus making for easy handling and reduc
,
ing the physical exertion required in operating
the saw.
-
The front standard I 3 has a semi-circular clamp
or collar member I! secured to its upper end
and a complementary clamp member i6 is hinged
bers i5 and it constitute a split clamping collar.‘
The collar members 95 and it have complemen
tary longitudinal lips it. A screw-threaded linch
pin i9 is screwed throiigh the lips and by swing
ing the handle of the pin, the collar members are
tightened or loosened about a torque tube 28
extending through the collar,
‘
The rear end of the torque tube is supported
in a collar member [15' similar to the member
A further object of the invention is to pro
it and secured on the upper end of the rear
' vide a simple and compact power plant and drive 15 standard it. See Figures 8 and 9. The upper.
conveniently arranged and controlled.
Still smother object of the invention is to pro~
vide an improved saw mechanism and mounting
therefor which positions the saw in advance of the
collar member it’ is hinged to the member it’ at
H’ andboth members have lips it’ connected
by a linch pin is’, whereby the torque tube may
be clamped or loosened. The rear end of the
' portable support and provides for adjustments 20 tube is formed with an outwardly-directed an
whereby horizontal and vertical sawing may be
nular ?ange 29 which abuts the rear end of the
done, as well as contributing to a clean out con
adjacent clamp collar. The forward end of the
tube, which extends forwardly of the standard
it, has an outwardly-directed annular ?ange 22
structlon.
A construction designed to carry out the inven
tion will be hereinafter described together with 25 which is bolted to the rear side of \a gear box
other features of the invention.
or head 23. See Figures 1 and 2. This box has
The invention will be more readily understood
a cap plate 24 bolted thereon. A depending sleeve
from a reading of the following speci?cation and
25 has an annular flange 26 at its upper end
by reference to the accompanying drawings,
bolted to the under side of the box.
wherein an example of the ‘invention is shown, 30 A vertical saw shaft 27 is journalled in roller
and wherein:
,
.
bearings 28 and 29, respectively, at its lower and
Fig. 1 is- a side elevation of a portable saw con-.
i upper ends. A bevel gear 30 fastened on the upper
structed in accordance with the invention,
end of the saw shaft has its hub carried by the
Fig. 2 is a. plan view of the same,
upper roller bearing 29. The saw shaftiextends
Fig. 3 is an enlarged transverse, sectional view 35 below the sleeve and has a circular wood saw
taken on the line 3-3 of Fig. 2,
3! clamped thereon between thecollars 32; the
Fig. 415 a plan view of the belt tightener,
lower ‘collar being fastened by nuts 33 screwed
Fig. 5 is a partial view of the saw driving
onto the lower end of the shaft.
.
mechanism, partly in elevation and partly in sec
While the saw is shown in a horizontal posi
40 tion, it may be disposed vertically and ‘at various
tion,
.
Fig. 6 is an enlarged transverse, sectional view ‘ angles by rotating the torque ‘tube 20. A group of
taken on the line 6—6 of Fig. 1,
teeth or lugs 34 (Figures 2 and 7) are arcuately
Fig. 7 is a side elevation of the same,
arranged on the tube contiguous to they front.
Fig. 8 is a transverse view of the rear torque 45 edges of the collar members l5 and I6 and a
tube mounting, and
»
latch 35 pivoted on the member I6, is adapted to
Fig. 9 is a side elevation of the same.
engage between the teeth to hold the tube against
In the drawings, the'numeral I ll designates a
rotation, once said tube has been rotated to the ‘
horizontal frame which converges toward its front
desired position. The linch pins I9 and I3’ are
end. Between the transverse center of the frame
employed to fasten‘the tube in the clamp collars.
and its front end. said frame is secured on a 50
For driving the saw shaft, a bevel gear 38 is
transverse axle H by U-bolts l2 ‘supported. in
fastened‘ on the forward end of a drive shaft 31
ground wheels II’, which places said transverse
in the gear box 23 and meshes with the gear
center well back of the axle. A front standard
30. The shaft is journaled in roller bearings 38
I3 is fastened on the front end of the frame and
at the end of the tube. The rear end ‘of the drive
, a rear standard 14 is secured on the frame sub- _55 shaft extends from the tube and has, fastened
stantially at the transverse center thereof.
thereon a twin-groove driven pulley 39. A power
9,412,704 I
3
'
.
’ plant in the form of a gasoline engine‘ II and a
- through the tube connected with the saw, an en
gine mounted on the frame in ,rear of the stand
'ards, and a ?exible readily disconnectable driving
connection between the engine and the saw driv
fuel tank ‘I is mounted on the rear end of the
frame l0.
'-
v
'
A twin-groove drive pulley 42 fastened on the i
ing means, the only ‘connections between the
engine shaft is somewhat less in diameter than
the pulley 39., V-belts 43 connect the pulleys;
' torque tube and saw frame being the engagement
These belts are of such length as to require a
of, the tube in the pair of clamps and the ?exible
belt tightener to make them track in the grooves
' driving connection between the engine and the
' saw“ driving 'r'rieans, whereby the‘ entire torque
a shaft“ extending rearwardly from the upper l0 tube along with the circular saw may be removed
by disconnecting the ?exible driving connection
end of .a' tightener arm 41 engages. the inner.
of the pulleys. An‘ idler pulley l5 Journaled on
‘ and releasing the pair of clamps.
‘ faces ofthe belts; The arm is“pivoted at its lower
‘
2. A portable saw including, a frame mounted ‘
end on a-stud 48 extending from the side of the
standard I4. A forwardly extending bracket 49
onground wheels, a pair of upstanding standards
is secured to one side of the engine 40 and a 15 spaced longitudinally on the frame, releasable
clamps on the upper ends of the standards, a,
bell-crank lever 50 is pivoted on this bracket;
the forward end of said‘ lever being connected
longitudinal torque tube removably .secured in
to the tightener arm by an angular link 5| and _
said vclamps and engaging said clamps at points
the pitman 52 of a hand lever 53 beingLpivoted
intermediate its ends and overhanging the front
‘ to the opposite end of said lever.
20 end of the frame, a, circular saw suspended from
A pair of rearwardly extending ‘handle bars 54 '
' have their forward ends attachedv to segment
the front end of the tube, saw driving means ex
tending through the tube connected with the saw,
a pulley disposed at the rear end of the torque ,
plates 55, fastened on each side of the rear end
of ‘he frame III, by bolts 56. Each plate has a
plurality of holes 51 arranged concentrically to
tube and connected to the saw driving means,
an engine mounted on the frame inrear of the
standards, a vertical belt drive between the en
the bolts 56. I Bolts 58 extending through the han
dle bars are engaged in- the holes to fasten said
gine ‘and the pulley connected to the saw‘driving
means, a. handle bar extending rearwardly from
bar at various inclinations. The bars have hand
grips- 59 at their rear ‘ends and are connected . _ the‘ frame, a belt tightener mounted on the frame
between the engine and the torque tube and hav
by a bridle'bar B0.‘
30
. The hand lever 53 is pivoted to the left-hand,
pivoted
handle bar
on the
and bar
an 60
angular
adjacent
throttle
the grip
leverof-the
BI is I
right-hand handle bar 54 (Fig. 2). The rear end .
of a throttle rod 62 is pivoted to the lever 61, while
ing a pulley engaging the belt drive, and actuat
ing means mounted on the handle bar connected
._with the belt tightener.
3. A portable saw including, a {frame mounted
on ground wheels, a pair of upstanding standards
its forward end is attached to the throttle of the - I spaced longitudinally on the‘ frame, releasable '
clamps-on the upper ends of the standards,_a lon- .
engine (not shown). When the engine lllis run-‘
ning, the belts 43 will be loose and motion will
not be imparted to the pulley ‘39 until the belts
- gitudinal torque tube removably secured in said
clamps and overhanging the front end of the frame,
are tightened by the pulley; therefore, a clutch
is not required. To drive the saw 3|, the opera
tor merely has to squeeze the hand lever 53 to
_ a circular saw suspended from the front end of the
ward the grip 59 which will ‘pull the pitman 52
at the rear end of the torquetube and connected
tube, saw driving means extending through the
tube connected with the saw, a" pulley disposed
rearwardly, thereby actuating the lever 5|! to , to the saw driving means, an engine mounted on
swing the arm 41 outwardly and cause the idler 45 the frame in rear of the standards, a vertical belt
drive between the engine and- the pulley- con- _
pulley 45 to tighten the belts 43.
_
~>
The belt drive is very advantageous because if
nected to the saw driving means, a handle bar
extending rearwardly from the frame, a belt
the saw should stall, the belts will slip and pre
tightener mounted on the frame between the‘ en
__vent stripping of the gears; also, by releasing the
pressure on the hand lever 53 a certain amount 50 .gine and the torque tubev and having a pulley
engaging the belt drive, and actuating means
of belt slippage will result and the speed of ro
tation of the saw must thus be controlled.‘ The r mounted on the handle bar conne'ctedrwith the
weight of the parts forward of the axle l I will
belt tightener, the only connections between the
torque tube and saw frame being the engage
be substantially equal to the weight of the ele
ments back of said axle and when the saw is 55 ment of thv tubein the pair of clamps and the
belt drive between the engine and the saw driv
being used, the load forward of the axle will sub
ing means, whereby the entire torque tube along
stantially counterbalance the load rearward of
with the circular saw may be removed by dis
said axle. This disposition of loads makes the
connecting the belt drive and releasing the pa
saw easy to manipulate and minimizes the labor.
. The foregoing description of the invention is 60
explanatory thereof and various changes in the
size, shape and materials, as well as in the de-'
tails of the illustrated construction may be made,
of clamps.
'
r
-
.
-
4. A portable'saw including, a frame mounted
on ground wheels, a pair of upstanding standards
spaced longitudinally on the ,frame, releasable
clamps on the upper ends of the standards, a saw
within the scope of the appended claims, without
departing from the spirit of the invention.
65 unit including an elongate torqueatube, a circular
What I claim and desire to secure by Letters
saw suspended from the front end of the tube,
‘saw driving means extending through the tube
Patent is:
\
, 1. A portable saw including, a frame mounted
I and vconnected with the saw, a pulley disposed at
on ground wheels, a pair of upstanding standards
the rear end ofthe torque tube and connected to
‘spaced longitudinally onv the frame, releasable 70 the saw driving means, said saw unit being re
clamps on the upper ends of the standards, a lon
movably secured as a unit in the releasable clamps
gitudinal torque tube removably secured in-s'aid
so as to be supported and held by the upstanding
1 clamps and overhanging the front end of the
frame, a circular saw suspended from the front ‘
standards, the forward end’ of the torque tube
overhanging the frame, an engine mounted on
end of the‘tube. saw driving means extending '75 the frame in rear ‘of the standards, a ?exible
2,412,704
,
5
a
readily disconnectable endless drive between the
engine and the pulley carried on the new unit,
and means for controlling transmission of power
by the endless drive, the saw unit being remov
able as a unit by disengaging the endless drive
from the pulley and releasing the clamps.
5. A portable saw including, a frame mounted
on ground wheels, a pair of upstanding standards
spaced longitudinally on the frame, releasable
7. A portable saw including, a frame mounted
on ground wheels, a torque tube mounted longi
tudinally on the frame, a circular saw suspended
from the front end of the tube, saw driving means
extending through the tube connected with the
saw, a pulley disposed at the rear end of the
torque tube and connected to the saw driving
means, an engine mounted on the rear of the
frame andlhaving a forwardly directed pulley
clamps on the upper ends of the standards, a 10 disposed beneath the saw driving pulley, said
longitudinal torque tube removably secured in
pulleys having their rotational axes parallel to
said clamps and overhanging-the front end of
the longitudinal axis of the torque tube, a ver
the frame, a circular saw suspended from the
tical belt drive between the two pulleys, a belt
front end of the tube, saw driving means ex
tightener mounted on the frame having a roller
tending through the tube connected with the saw, 15 engaging the belt drive between the upper and
a pulley disposed at the rear end of the torque
lower pulleys, a handle bar extending rearwardly
tube and connected to the saw driving means, an
from the frame, and actuating means mounted
engine mounted on the frame in rear of the
on the handle bar connected with the belt tight
standards, a belt drive between the engine and
ener.
‘
the pulley carried by thesaw unit. a handle bar 20 l 8. A portable saw including, a frame mounted
extending rearwardly from the frame, a belt
on ground wheels, a pair of upstanding standards
tightener mounted on the frame having means
spaced longitudinally on the frame, releasable
engaging the belt drive, and actuating means
clamps on the upper ends of the standards, a
mounted on the handle bar connected with the
saw unit including an elongate torque tube, a cir
belt tightener, the saw unit being removable as 25 cular saw suspended from-the front end of the
a unit by disengaging the belt drive from the pul
' tube, saw driving means extending'through the
ley and releasing the clamps.
tube and connected with the saw, a pulley dis‘
’ 6. A portable saw including, a frame mounted
posed at the rear end of the torque tube and con
on ground wheels, a torque tube mounted longi
nected to the saw driving means, said saw unit
tudinally on the frame. a circular saw suspended 30 being removably secured as a unit in the releas
from the front end of the tube, saw driving means
able clamps so as to be supported and held longi_ .
extending through the tube connected with the
tudinaily with respect to the frame by the up
saw, a pulley- disposed at the rear end of the
standing standards, the forward end of the torque
torque tube and connected 'to the saw driving‘
tube overhanging the frame, an engine mounted
means, an engine mounted on the rear of the
on the frame in rear of the standards and hav
frame and having a forwardly directed pulley dis
ing a forwardly directed pulley disposed beneath
posed beneath the saw driving pulley, said pulleys
the saw driving pulley, said pulleys having their
having their rotational axes parallel to the ion
rotational axes parallel to the longitudinal axis
gitudinal axis of the torque tube, a vertical belt
of the torque tube, a vertical belt drive between
drive between the two pulleys, a belt tightener 40 the two pulleys, a belt tightener mounted on the
mounted on the frame having a roller engaging
frame having a roller engaging the belt drive be
the belt drive between the upper and lower pul
tween the upper and lower pulleys. and means for
leys, and means extending longitudinally of. the
actuating the belt tightener.
frame for actuating the belt tightener.
‘
JOHN C. JAQUES.
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