Improvements in Rotary Snow Ploughs.
Year: 1895

page_text: Date of Application, 13th May, 1895-Accepted, 7th Sept., 1895
COMPLETE SPECIFICATION,
Improvements in Rotary Snow Ploughs.
I, FRED DALLAS LINTON, residing at 551 King Street West in the City of
Toronto in the County of York and Province of Ontario, Electrician, do hereby
declare the nature of this invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement
This invention relates to certain new and useful improvements in snow-ploughs,
and relates more particularly to the general construction and operation of the
plough whereby the snow may be gathered from the front of an advancing
plough and readily thrown to any required distance clear of the track, and the
object of the invention is to make a simple, effective and easily operated snow
plough, which can be driven at any required speed and which can be adjusted to
regulate the distance which the snow is to be thrown to the side of the road-bed;
and the invention consists essentially of a plough in the body of which is formed
a fan chamber, and from this fan chamber is an outlet or discharge chute closed
y an adjustable slide or lid. Working in the fan chamber is a rotary fan con-
sisting of a hub, and to the outer end of the hub is rigidly connected a series of
radial spokes To the outer side of the radial spokes is bolted or otherwise
secured a radial cutting blade which is adapted and so arranged as to cut into the
snow and draw it into the tan chamber. Connected to the inner end of the hub
are a senes of tangential spokes, and connected to each radial spoke and to its
opposite tangential spoke is a horizontal binde for the purpose of creating a suction
within the fan chamber, and discharging the snow sucked into the chamber through
the discharge chute the whole device being hereinaftet more fully set forth and
more particularly pointed out in the claims.
In the drawings.
Fig 1 is a perspective view of the snow plough looking at it from the front.
Fig. 2 is a similar view showing the casing partly broken away to illustrate the
discharge chute
Fig. 3 is a perspective view of the snow plough looking at it from the back.
Fig. 4 18 a cross sectional view on the lines a-a Fig. 1
Fig. 5 is a perspective view of one of the rotary fans.
Like letters of reference refer to like parts throughout the Specification and
drawings.
The fan consists of a hub A to the outer end of which is secured a series of
adial spokes B, and to the miner end of which is secured a series of tangential
spokes C, which correspond in number and location with the radial spokes B. The
outer faces of the radial spokes B are all in the same plane, in order that the
cutting blades D may be bolted or otherwise secured to them in the proper
relation to each other. The tangential spoke C corresponding with its radial
spoke B is in a position on a line transversely crossing the horizontal axis of the
hub A, and the side face of the radial spoke B and the sido face of its corresponding
tangential spoke Care in the same plane in order that the horizontal blade E may
transversely cross the horizontal axis of the hub A. By arranging the horizontai
blades transversely to the horizontal axis of the hub A, the requisite suction
can be cicated to draw the snow from the front of the cutting blades into the
tan chamber, and at the same time this arrangement of the horizontal blades, E

page_text: avoids any considerable resistance during the revolution of the fan. In addition
to the suction created by the blades, the blades have a discharging force sufficient
to throw the snow within the fan chamber out through the discharge chute in the
top of the side of the body of the frame. As the force of the fans would be
sufficient to throw the snow to a considerable distance from the plough, and when
used in populated districts considerable danger would arise from the violent
discharge of the snow, I find it advisable to regulate the distance which the snow
15 to be thrown, and this 1 accomplish by the means hereinafter set forth.
In
The fan revolves in a fan chamber formed in the body of the frame G, and
this fan chamber is of a sufficient size to allow of the fice revolution of the fan
the top of the fun chamber F is an outlet port H which connects with a discharge
chute 1. The discharge chute I opens out through the top of the side of the
frame G, and hinged to the top of the frame G and overhanging the outlet of the
discharge chute is a lud o cover J. Connected to the frame G and located one
on each side of the hd J are two segmental plates K, and formed in each of the
segmental plates K is a guide L Connected to each side of the lid J and working
in its respective guide L is a pin M. Connected to the lid J is a lever N by means
of which the said lid J is opened or closed. On each side of the opening of the
discharge chute through the top of the side of the fiame A is a Hunge O for the
purpose of breaking the wind from the discharge chute during the advance of
the snow plough Supporting the outer end of the shaft P of the fan is a V-shaped
bracket one army of which is connected to the frame G vertically above the
shaft P, whilst the other arm q' is connected to the flame G at an angle of forty-
five degrees to the atm q. A bracket of this kind in addition to supporting the
eud of the shaft gives rigidity and strength to the shaft, aud prevents it sagging
and causing the blades of the fan to bind on the wall of the fan chamber The
real end of the shaft Pis jou nalled a bearing R formed in the back of the
frame G. The front of the frame G is provided with an outwardly Haiing mouth S
which scoops in the snow to the revolving fun or fans. The top of the mouth S is
provided with an adjustable slide T, which can be raised or lowered as required.
When the snow is of a great depth the slide can be raised to its fullest extent or
completely removed if required in order that the revolving fans may cut into the
full depth of the snow and discharge it through the discharge chute I Again,
when the snow is only of a slight depth it is necessary to lower the slide to
approximately the depth of the snow, in order that the lower part of the fans can
cut the snow and suck it into the fan chamber, and discharge it through the
discharge chute I. Without the slide T the revolution of the fans when the
plough was running through a light fall of snow would have a tendency to
knock the snow to one side in place of sucking it into the fan chamber and
throwing it out through the discharge chute To allow of the adjustment of
the slide T there is formed through the sides of the slide T and through
the sides of the mouth S a series of holes through which are passed shit pins
or bolts U. These allow of the convenient adjustment of the slide T, and at
the same time hold it securely to the mouth. 1 may find it advisable in place of
using one revolving fan to use several fans in which case the construction and
operation of each of the fans is similar to the one just described, each fan
revolving in its respective fau chamber and discharging its contents through a
discharge chute into the last or final discharge chute from which it is delivered.
In this case the last or final discharge chute is of greater dimensions than the
other discharge chutes, in order that the output from the remaining discharge
chutes may be emptied into it without causing the snow to block. When several
rotary fans are employed there is mounted on the rear end of each of the fan
shafts Pa sprocket wheel V, and passing around the sprocket wheels V is a
sprocket chain W which engages with a sprocket wheel X mounted on the
diving shaft Y one end of which is journalled in a bearing formed in the back of
the frame G.
The operation of the device is as follows. Motion is transmitted to the shafts P

page_text: of the fans, and the fans are set in motion. The cutting blades D break the snow
and permit of its being sucked into the fan chambers by means of the horizontal
blades E The revolution of the horizontal blades E throws the snow from the fan
chambers into the discharge chute where it is thrown with force to the side of the
road-bed. To regulate the distance which the snow is to be thrown [ find it
advisable to open or close the binged lid J. By opening the hinged lid to its
fullest extent the snow can be thrown to the greatest possible distance by the
horizontal blades E, but by closing the lid J the distance which the snow is thrown
13 shortened, and by almost completely closing the lid J the snow could be delivered
almost at the side of the snow plough It is necessary to provide some means for
regulating the distance which the snow is to be thrown, in order that accidents will
be avoided whilst the plough is passing through populated or built up districts. I
do not confine myself to driving the fans by any particular style of gear, as I mav
employ any convement means which will successfully accomplish the purpose.
Where a series of faus are employed I find it advisable to drive the fans at
different rates of speed, that is, the fans farthest romote from the delivery end of
the discharge chute are diven at a much higher rate of speed than the fan
contiguous to it, as the fans farthest remote from the delivery end of the discharge
chute have farther to throw their output, and consequently require a greater force
for that purpose.
Having now particularly described and ascertained the nature of my said inven-
tion I hereby declare that what I claim is :
1 A snow plough consisting of a fan chamber, a fan within the fan chamber,
Consisting of a series of cutting blades and a series of throwing blades, and a
discharge chute from the fan chamber, substantially as specified
2 A snow plough consisting of a fan chamber, a fan with the fan chamber,
consisting of a hub, a series of radial spokes connected to the outer end of the hub,
a series of tangential spokes connected to the inner end of the hub, a blade
connected to each of the radial spokes and arranged to transversely cross the
honzontal axis of the shaft, a cutting blade connected to the outer sule of each of
the radial spokes and a discharge chute from the fan chamber, substantially as
specified.
3. A snow plough consisting of a fan chamber, a fan within the fan chamber,
consisting of a series of cutting blades aud a series of throwing blades, a discharge
chute from the fan chamber, and an adjustable lid for the end of the discharge
chute to regulate the distance which the suow is to be thrown, substantially as
specified
4. A snow plough consisting of a fan chamber, a fan within the fan chamber,
consisting of a hub, a series of radial spokes connected to the outer end of the
hub, a series of tangential spokes connected to the inner end of the hub, a blade
connected to each of the radial spokes and arranged to transversely cross the
horizontal axis of the shaft, a cutting blade connected to the outer side of each of
the radial spokes a discharge chute fioin the chamber, and an adjustable lid for the
end of the discharge chute to regulate the distance which the snow is to be thrown,
substantially as specified.
5. A snow plough consisting of a frame, a fan chamber within the frame, a
discharge chute from the fan chamber opening through the side of the frame, a lid
hinged to the fame and arranged to close the end of the discharge chute, guides
connected to the frame and arranged one on either side of the discharge chute, a
pin connected to each side of the lid and arranged to work in said guides, a lever
to open and close the said lid, and a fan arranged to revolve within the fun
chamber, substantially as specified.
6 A snow plough consisting of a frame, a fan chamber within the frame, a
discharge chute from the fan chamber opening through the side of the frame, a
lid hinged to the frame and arranged to close the end of the discharge chute,
guides connected to the frame and arranged one on either side of the discharge

page_text: chute, a pin connected to each side of the lid and arranged to work in said guides,
a lever to open and close the said lid, a fan arranged to revolve within the fan
chamber, consisting of a hub, a series of radial spokes connected to the outer end
of the hub, a series of tangential spokes connected to the inner end of the hub,
a blade connected to each of the radial spokes and the corresponding tangential
spoke trausversely crossing the horizontal axis of the hub, and a cutting blade
connected to the outer side of each of the radial spokes, substantially as specified.
7. A snow plough consisting of a frame, a fan chamber within the frame, a
discharge chute from the fan chamber opening through the side of the frame, a
lid hinged to the frame and arrauged to close the end of the discharge chute,
guides connected to the frame and arranged one ou either side of the discharge chute,
a pin connected to each side of the lid and arranged to work in said guides, a
lever to open and close the said lid, a tan arranged to revolve within the fan
chamber consisting of a hub, a series of radial spokes connected to the outer end
of the hub, a series of taugential spokes counected to the inner end of the hub, a
blade connected to each of the padial spokes and the corresponding tangential
spoke transversely crossing the horizontal axis of the hub, a cutting blade con-
nected to the outer side of each of the radial spokes, a shaft for each of the fans,
the outer end of which is supported by a V-shaped bracket conuccted to the front
of the frame, the rear end of which is mounted in a bearing in the frame, and
mechanism for causing the revolution of the said shaft, substantially as specified.
8. A snow plough consisting of a frame, a fan chamber within the frame, a
discharge chute from the fan chamber, a fan arranged to revolve within the fan
chambei, aud an outwardly flaring mouth for the frame arranged to scoop the
snow into the fan, substantially as specified.
Dated this 13th day of May A D. 1895
HUGHES & YOUNG,
23 Coleman Street, London, E.C, Agents.