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, Get 8, H46.
Filed Nov. 15, 1943
3 Sheets-Sheet l
ct. 8, 1946..
Filed Nov. 15,‘ 1943
3 Sheets-Sheet 2
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1')’: g 44444;)
05d. 8, v19%.
Filed Nov.‘ 15, 1943
5 Sheets-Sheet 3
Patented Oct. 8, 1946
Norman L. James, Ingersoll, Ontario, Canada
Application November 15, 1943, Serial No. 510,408
In Canada November 19, 1942
3 Claims.
(C1. 37-45)
Figure 8 is a perspective detail of one of the
shovel cutters and the chain mounting for same.
plows and the principal objects of the invention
The invention as herein shown is applied to
are to devise a machine which will effectively cut
any standard type truck. The supporting frame '
into accumulated snow on highways, railways
or other areas and remove it from in front of iii for the snow plow mechanism is shown formed
of a pair of horizontal bars I which are slung
the machine, dispersing it on either side de?
beneath the front axle structure, being sucured
nitely clear of the road cut through the snow.
thereto by suitable blocks or clevices, not shown,
A further object is to devise a mechanism
This invention relates to improvements in snow
which will not clog and become bound or jammed
and extending rearwardly they are connected to
with snow, slush or ice and which will continu» 10 the truck frame 2 by rigid vertical supports 3.
ously clear itself so that it will operate continu
ously in the heaviest kind of service.
A still further object is to devise a structure
The forward ends of the bars I ‘are preferably
formed with outwardly extending offsets 4 and to
which can be mounted directly on an ordinary
cured the parallel I-beam uprights 5.
Adjacent to the bottom ends of the uprights
.5 and arranged at the forward sides thereof is
heavy duty power truck.
The principal feature of the invention consists
the extremities of these offsets are rigidly se
in the novel construction and arrangement of a
a rigid cross I-beam 6 which is provided with
plurality of shovel-like cutter members mounted
upon an endless belt arranged transversely and
pairs of brackets ‘I slidably embracing the for
in front of a supporting and propelling truck so
that the movement of the cutters will progres
sively slice the snow from in front of the ma
chine and carry it laterally and discharge it up
wardly and outwardly at either end of a casing
in which the laterally operating member is
ward ?anges of the uprights. A similar cross
beam 8' is spaced above the beam 6 and both
beams are rigidly connected by welding or bolts to
a vertical plate 9 which forms the back plate of
an elliptical-shaped casing H) which extends
transversely for the desired width to house the
snow-cutting members.
A ?ange H arranged substantially at right
angles to the plate it! extends along the top side
A further feature of importance consists in' the
of said plate and around the rounded lateral
novel provision of a rigid frame secured beneath
ends, the plate 9 extending straight down at the
the chassis of the truck and extending forwardly
thereof and carrying an upright frame forward of 30 ends to meet the back edge of a bottom plate l2.
This bottom plate is rigidly mounted on brackets
the truck in which the transversely operating
l3 secured to the bottom cross beam 6 and slopes
cutting device is adjustably mounted.
downwardly and forwardlyfrom the back plate 9
In the accompanying drawings
Figure 1 is a plan view of a truck having my
and may be formed with rigid cutting teeth to
improved snow plow mechanism mounted 35 cut into the hard lower strata of snow or ice on
the road surface. The plate 9 is preferably pro
Figure 2 is a side elevational view of the as
vided with a slidable toothed cutter bar M which,
sembly shown in Figure 1.
Figure 3 is a front elevational view of the
as shown in detail in Figure 6, is reciprocated by
a rocker arm I5 mounted on a pivot IS on the
snow plow mechanism showing the adjustable 40 bracket l3. This rocker arm is slotted at its in
discharge chutes at opposite ends arranged in
ner end and driven by a crank rod l1 vertically
different positions.
mounted in the beam 6 and driven by a mecha
Figure 4 is an enlarged plan detail of the driv-i
nism hereinafter described.
ing gear connection between the power shaft and
Mounted on the upper cross beam 8 adjacent
the endless chain snow-cutter mechanism.
either end is a yoke-shaped bearing member
Figure 5 is a part sectional side elevational
18 in which shafts l9 and I9’ are journalled and
view of the mechanism illustrated in Figure 4.
said shafts extend forwardly through the plate
Figure 5a is a front elevational view of one
9 and each has mounted on the forwardly extend_,
of the sprockets and part of the guides for the
50 ing end a double sprocket drum 20, the ?anges of
endless cutter chain.
Figure 6 is an enlarged sectional view of the
which are notched on the perimeter to receive
bottom cutter edge of the casing housing the
chain cutter.
Figure '7 is an enlarged detail of the swivel
the roller pins 2| of an endless link chain 22.
Channel-shaped track bars 23 mounted on
rigid brackets 24 secured to the plate 9 are ar
55 ranged to engage the rollers of the chain belt to
mounting of one of the chain cutter members.
guide and support the upper and lower reaches of
the belt in rigid horizontal paths.
The shafts l 9 and I9’ are each provided with a
sprocket 45 arranged between the paired bearings
of the yoke members l8 and the sprockets 45 are
operatively connected by a drive chain 46.
The shaft I 9 has mounted thereon sprockets 41
and 48.
A‘shaft 49 is mounted parallel to the shaft IS
Mounted on certain of the links of the chain
belt at spaced-apart intervals are longitudinal
bars 25 each of which is formed with a circular
platen 26. A ?anged circular table 21 is rotat
ably mounted on each of the platens 26 and the
:bottom ?ange thereof is formed with a diverging
radial slot 28 which limits the pivotal movement
in suitable bearings carried by
and carries a sprocket 50. This
10 connected to a ?exible shaft 5|
tively connected with a motor 52
the cross bar 8
shaft is directly
which is opera
of the table 21.
The upper side of each of the tables 21 is pro
mounted on the
vided with a longitudinally slotted rib or ?ange
truck. A clutch member 53 slidably and non
29 in which is ?tted the web of a substantially
rotatably mounted on the shaft 49 is arranged
H-shaped shovel member 30. The ?anges 3| of
to operatively connect the sprocket 50 with the
the members 30 are ?ared outwardly and form 15 drive shaft to drive the sprockets 20 and the
cutting edges to cut the snow against which the
shovel chain in one direction.
machine is directed.
A spur gear 54 rotatably mounted on the shaft
A wedge-shaped guard plate 32 is rigidly se
49 is adapted to be engaged by the clutch 53 and '
cured to the brackets 24 which support the chan
drives a spur gear 55 mounted on a jack shaft 56
nel-shaped tracks which carry the horizontal 20 and a, sprocket 51 on the jack shaft is connected
reaches of the chain belt and said guard plate
by a chain with the sprocket 48 on the shaft l9,
extends forwardly and protects the chain from
thus providing means, on the operation of the
being clogged with ice and snow. The casing
clutch, for operating the shovel chain in a reverse
formed by the back plate 9,1ianges l l and bottom
direction, the clutch being controlled by a suit
plate I2 is open at the front and exposes the
able shift rod 53' extending to the cab of the
shovels travelling laterally of the casing so that‘
the sharp edges of the shovels, which travel rap
The gear mechanism shown and described is a
idly in a direction transversely of the machine
very simple mechanical arrangement, which of
and swing slightly On their pivot supports, will
course might be substituted by any suitable form
slice off the face of the snow bank against which
of reverse gear mechanism, the object being to
the machine is forced by the truck upon which
‘be able to operate the shovel chain in either a
it is mounted and the snow ?lling each shovel will
right or left direction so that it may discharge
be carried along to the rounded end of the cas
the snow through either of the discharge chutes
ing. The movement of the lower bank of shovels
described. It will be understood that this may
as the chain follows the perimeter of the sprock 35 be accomplished as the H-shaped shovel members
ets is accelerated so that the snow is thrown out
ward at the end of the casing toward which the
bottom reach of the shovel chain is moving.
will cut the snow equally well operating in either
direction, and as the shovels are pivotally mount
ed and can swing on their pivots either right or
A chute 33 mounted on a swivel plate 33' and
left within the limits of the con?ning slot in the
extending through a slot at each end of the cas 40 carrying tables mounted on the endless chain 22
ing it! enables the snow to be discharged at either
their cutting edges will, upon engaging the snow,
end by reversing the movement of the shovel
chain. The angularity of the chutes may be ad
justed to direct the snow outwardly and upwardly
at variable angles. When it is desired to project
the snow upwardly and outwardly a considerable
distance chute extensions 34 are provided. These
chute extensions are preferably hinged and may
be adjusted to various angles by a screw mem
ber 35 which is shown threaded right and left 50
and engaging threaded blocks 36 connected by
links 31 to the chute extensions. The member
35 is shown provided with a worm wheel 38 which
is operated by a worm arranged upon a cranked
swing outwardly at a slight angle from their plane
of travel and effectively dig into and cut away
the snow.
It has been stated that the cutter bar at the
bottom of the shovel chain casing may be pro
vided with a reciprocable cutter bar and a crank
shaft I1 is shown connected with the rocker arm
l5 for operating same. The shaft IT, as shown
in Figure 5, is provided at its upper end with a
bevel pinion 58 meshing with a pinion 59 on a
shaft 60 mounted in the bar 8. This shaft is
suitably driven by a sprocket connection with a
sprocket wheel 6| mounted on the shaft 49.
In the operation of the device herein described.
the frame I is mounted in the underslung posi
tion shown, to any suitable truck on which a
motor is mounted and power for operating the
rod 39 which extends to the operating cab of the
truck. If the extension chutes are not required
longer links 31 may be connected to the pivotal
chutes 33 so that their angularity of discharge
may be altered from the cab.
The frame formed by the cross beams 6 and 8 (if) shovel chain is conveyed to the driving sprockets
as described. The shovel chain is operated at a
and the plate 9 is here shown, and preferably
rapid rate of movement and the chains being car
is suspended by coil springs 49 connected to suit
ried horizontally in the channel guides carries
able eyes “ secured in the top bar 8 and sus
the shovels transversely. As the truck moves
pended from brackets 42 mounted on the upper
ends of the uprights 5.
- forward the rapidly moving shovels slice the snow
The load of the entire snow-cutting structure
from the snow bank and at the discharge end of
described is adjustably supported by the springs
and can be readily adjusted up or down to cut at
varying distances from the road surface.
A toothed rack 43 extends vertically of the mov
able snow-cutting structure and an operating pin
ion 44 is mounted on a spindle in one of the up
rights 5. This pinion maybe operated by a hand
grank and it may be locked by a, suitable locking
the casing the shovels, swinging upward with an
accelerated movement, ?ing the snow carried
thereby upward through the chute 33 with su?i
cient impetus to carry it well to the side of the
road being cut and at any desired angle as regu
lated by the adjustable chute or chute extension.
The lower cutter bar slices the lower strata of
ice or packed snow and it feeds up the inclined
bottom plate into the path of the rapidly moving
shovels and is picked up and expelled with the
‘ snow sliced from the face of the out.
A machine such as described is of a rugged
construction and will operate effectively in snow
or ice of varying depth.
Where drifts are en
countered that are higher than the lower reach
of the chain of shovels, the shovels of the upper
reach will cut into the face of the drift and carry
it around Within ‘the casing flange and ?nally
on said chain belt and presenting snow cutting
edges, means for guiding the snow into the path
of said cutters, and means for directing the snow
discharged from said cutters.
2. A snow plow comprising a frame mounted
transversely of a truck, an endless chain belt ex
tending longitudinally of said frame and having
rollers extending from the sides thereof, sprockets
supporting said belt, rigid trackways arranged
discharge it outwardly through the discharge 10 each side of said belt and engaging the roller ex
tensions thereof for guiding the horizontal reach
es thereof, a longitudinal bar ‘forming a part of
The device is distinctly advantageous as it may
certain of said chain links, a slotted table pivot
be attached at very little cost to practically any
ally mounted on each of said bars, and a shovel
standard highway truck, and it will cut its way
through any drift that may be encountered with 15 like cutter mounted on each of said pivotal tables,
the slot in each table engaging the longitudinal
out Clogging and will effectively clear itself as it
bar and permitting a limited pivotal action of the
cutters to swing the snow cutting ?ange edges
What I claim as my invention is:
l. A snow plow comprising a frame having a
3. A snow plow comprising a frame having a
closed vertical back mounted transversely of a 20
truck, horizontally spaced shafts arranged adja—
cent to opposite ends of said frame, paired
sprockets mounted on each of said shafts, an end
closed vertical back, horizontally spaced shafts
arranged adjacent to opposite ends of said frame,
paired sprockets mounted on each of said shafts,
a chain belt horizontally mounted on said
less chain belt extending between and operated
by the sprockets on said shafts, said belt having 25 sprockets, means for guiding said chain belt, and
shovel-like cutters H-shaped in cross section
roller extensions engaging said sprockets, paired
mounted perpendicularly on the links of said
horizontal trackways rigidly supported from said
chain belt and having ?aring perpendicular cut
frame between said sprockets and supporting the
ting edges.
rollers of the upper and lower reaches of said
chain, shovel-like cutters mounted at intervals 30
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