Snowplow. Page: 3 of 4
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UNITED STATES PATENT OFFICE.
MARY JEZOVA, OF WALLIS, TEXAS.
SNOWPLOW.Specification of Letters Patent.
Patented Nov. 15, 1921.
Application fled April 5, 1920. Serial No. 371,309.
To allwhwo'nit may concern:
Be it known that I, MARY JEZOVA, a citi-
zen .of Czechoslovakia, residing at Wallis,
in the county of Austin and State of Texas,
5 have invented certain new and useful Im-
provements in Snowplows, of which the fol-
lowing is a specification.
The present invention relates to. snow
plows adapted to be positioned at the front
1.0 end of a motor vehicle and being of trian-
gular formation with the sides thereof capa-
ble of independent vertical adjustment for
purposes of . extending or increasing the
height of the plow when snow drifts are en-
15 countered during the operation of the plow,
the invention being also adapted for attach-
ment to a steam or electric car for clearing
the track in advance of the car.
With the above general objects in - view
20 and others that will appear as the nature of
the invention is better understood, the same
consists in the novel form, combination and
arrangement of parts hereinafter fully de-
scribed in connection with the accompanying
25 drawings.
In the drawings wherein like reference
characters indicate corresponding parts
throughout the several views,
Figure 1 is a side elevational view of a
30 snow plow constructed in accordance with
the present invention, one side of the plow
being removed and with a portion of a car
and track shown by 'dotted lines,
Fig. 2 is a top plan view of the plow with
35 both sections assembled,
Fig. 3 is a vertical cross sectional view
taken on line III-III of Fig. 1 showing the
plow sections extended,
Fig. 4 is a detail sectional view showing
40 the plow sections withdrawn to present the
least resistance,
Fig. 5 is a cross sectional view taken on
line V-V of Fig. 1, showing the rack and
gear for elevating the plow extension,
46 Fig. 6 is a horizontal sectional view taken
on line VI-VI of Fig. 1, and
Fig. 7 is an enlarged fragmentary in-
terior elevational view of the front end of
the plow showing opposite sections extended
50 at different heights.
The invention attached to a vehicle is
more clearly shown in Figs. 1 and 2, there
being illustrated by dotted lines a motor ve-
hicle as a steam or electric car 8 mounted
55 upon the track 9 and having the usual guardor catcher 10 projecting forwardly of the
car.
The snow plow being of triangular forma-
tion, open at its rear end and pointed at its
forward end is secured to the guard 10 and 60
comprises opposite section walls 11 carrying
angle brackets 12 at their lower ends for
attachment to the guard 10 while the for-
ward ends of the walls 11 form the apex of
the triangle as shown in Figs. 2 and 6. With 65
the device thus positioned, during the for-
ward travel of the car 8, snow is removed
from the track 9 and equally distributed
upon the opposite sides of the track as will
at once be obvious. 70
An extension wall 13 is positioned in-
wardly of each wall 11 and is maintained
operatively positioned relative thereto by
the headed pins 14 projecting inwardly from
the walls 11 and extending through the ver- 75
tical slots 15 in the extension members 13,
while the rear ends of the members 13 slide
in guide brackets 16 secured to the forward
end of the car 8 as shown in Figs. 1, 2 and
6. The forward ends of the extension mem- 80
bers 13 are beveled as illustrated in Figs. 2
and 6 and form the apex of a triangle simi-
lar to the walls 11, the extension members
substantially frictionally engaging the walls
11 during the sliding movement thereover. 85
In order to effect a vertical sliding move-
ment of the extension members 13, the inner
faces of said members at spaced points are
provided with vertical rows of rack teeth
17 with which the pinions 18 fixed to the 90
shaft 19 are in constant mesh, the shaft 19
being journaled in the upper ends of the
brackets 20 that are suitably secured to the
car 8 and guard 10 as shown in Fig. 2. The
extension member 13 of each side wall 11 95
is independently operable and is adapted to
have a wrench or other instrument engage
the key end 19' of the desired shaft for ro-
tation thereof to cause the pinions 18 to
raise or lower the extension member 13. 100
When it is desired to elevate the extension
members 13, the shafts 19 are operated and
the extension members guided in their ver-
tical movements by the pin and slot con-
nections 14 and 15 between the wall 11 and 105
said members.
While there is herein shown and described
the preferred embodiment of the present in-
vention, it is nevertheless to be understood
that minor changes may be made therein 1101,396,846.
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Jezova, Mary. Snowplow., patent, November 15, 1921; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1258473/m1/3/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.