close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2114641

код для вставки
5TEVENSON
SSSSSSS OW
Fil
ITIN!!
2,114,641
Patented Àpr. 19, 193g
UNITED STATES `PA'I‘ENT OFFICE
2,114,641
SNOW PLOW
Robert E. Stevenson, Indianapolis, Ind.
Application vJanuary 6, 1937,- Serial No. 119,292
3 Claims.
This invention relates to the art of plows and
particularly to a snow plow, the primary object
of which is to throw the snow aside by simply
pushing the plow along without having to pick
5 up the snow a shoveful at a time and throw it
aside. A further important advantage of my
invention lies in the fact that it may be made
at a comparatively low cost and is light in weight
so that it may be operated without undue fatigue.
A still further advantage of my invention is that
it may be easily operated over rough walks and
the like.
These and other objects and advantages will
become apparent to those versed in the art from
the following description of one particular em
bodiment of my invention as illustrated in the
accompanying drawing, in which
Fig. 1, a perspective view of a preferred form
of my plow;
Fig. 2, an elevation of the side next to the
20 operator; and
Fig. 3, a top plan view.
Like characters of reference indicate like parts
throughout the several views in the drawing.
I form the plow share 9’ from sheet metal
2 Ul of the desired thickness to have a forward scrap
ing or cutting edge Il’. From this edge II', the
metal is carried rearwardly and around upwardly
to form in effect a mold board I0’. The metal
is carried back from the edge Il’ to form a hat
30 or plane portion having a rearwardly extending
length a’ on the one side, here shown as the
right hand side, greater than -the length b’ on
the opposite side and the curved portion extend
ing rearwardly and upwardly and around for
3 Ul wardly therefrom forms the part I0’ which will
collect and guide the snow to one side of the plow.
A very important feature of the invention is
that the forward edge Il’ is at right angles to
40 the line of travel of the plow as it may be pushed
along over the surface being cleaned. In other
words the edge I I’ is at right angles to the handle
I2 which is secured to the plow by means of any
suitable bracket I3 attached to the plow on its
45 rear side substantially at the junction of the
upwardly curving portion with the forward plane
portion. I have discovered that contrary to the
usual practice in plowing operations, the plow
is most effective by having this forward edge II’
50
formed at right angles to the handle I2 rather
than being sloped to one side. In fact it has been
my experience that sloping the forward cutting
edge gives very unsatisfactory performance and
causes the plow to slip sidewise and not main
55 tain a forward course.
Another feature of my invention resides in
the fact that I provide means for permitting the
plow to be pushed along over obstructions by
rocking the handle I2 downwardly without havj
ing to lift the plow.
In the form of my invention shown in Figs. 1-3,
inclusive, the upwardly extended rear portion
III’ is extended by suitable curves to the cutting
edge Il’ at the narrow end b' to keep the snow
from escaping at that end and, aided by the
curves, to cause the snow to roll and slide to
ward the opposite wide, discharge end a', and to
increase the clearance and facilitate the dis
charge of the snow from the plow, I curve the
rear portion I0’ rearwardly and also curve the 15
adjacent lower or plane surface downwardly for
the same reason.
To give the cutting edge Il’ a better contact
or bite against the surface of the side-walk, I
form a depending flange or runner I8 at the end
a', gradually increasing in width from nothing
at the edge II’ to approximately an inch near
where the curve for the rear upwardly ex
tended portion IU’ begins, and there this runner
merges into the adjacent curve of the plane. The
flange I8 thus gives the proper tilt of the plane
to cause the edge II’ to bite and does not ob
struct the discharge of snow.
By forming the plow to have a forward cutting
edge at right angles to the direction of travel of
the implement and having a mold board across
the rear of the plow in a sloping position in ref
erence to the line of travel, I have provided an
unusually efficient tool for shifting to one side
materials from an area to be cleaned by simply
pushing the plow straight ahead. The peculiar
0
5
formation of the plow eliminates any tendency of
it to be shifted sidewise as the snow or the ma
terial is being carried laterally of the plow under
the forward movement thereof. Where the snow
is frozen or tramped, a short backward and for
ward movement will usually serve to loosen it for
easy removal by the plow.
While I have herein shown and described my
invention in the one form as now best known
to me, it is obvious that structural variations may
be made without departing _from the spirit of
the invention and I therefore do not desire to be
limited to this precise form beyond the limita
tions as may be imposed by the following claims. 50
I claim:
1. A plow formed to have a forward scraping
edge from which the plow extends rearwardly
into an upwardly curved portion which is angu
larly disposed in relation to saidvedge, and fur 55
2
2,114,641
ther formed to have a runner on which the plow
may fulcrurn to lift said edge, said runner com
along the plane portion of the plow and then
ñares outwardly at the curved portion to in
prising a forwardly tapering member extending
from the cutting edge toward the discharge end
of the plow.
2. A plow formed to have a forward scraping
edge from which the plow extends rearwardly
crease the area of discharge.
into an upwardly curved portion which is angu
larly disposed in relation to said edge, and
10 formed >to have a plane portion between said edge
and said curved portion and further having the
end of the angularly disposed portion nearest
the scraping edge curved to direct the snow to
ward the other end which is the discharge end
of the plow and having the discharge end formed
with a tapered ñange which extends downwardly
and widens rearwardly from the cutting edge
3. A plow formed to have a forward scraping
edge from which the plow extends rearwardly to
a ñanged portion and formed to have a plane por
tion between said edge and said flanged portion
and further having the end of the hanged por
tion nearest the scraping edge hanged upwardly
across the plane to prevent escape of snow at 10
that end of the plow and curved to direct the
snow toward the other end which is the discharge
end of the plow, said discharge end being ñared
outwardly to increase the area of discharge and
flanged downwardly into a runner tapering to 15
the forward scraping edge.
ROBERT E. STEVENSON.
Документ
Категория
Без категории
Просмотров
0
Размер файла
253 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа