Road-Grader Page: 4 of 4
[2], 2 p. : ill. ; 23 cm.View a full description of this patent.
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1,168,723
Upon a rearwardly projecting portion of
the bracket 17, there is centrally mounted
the apex of a bell-crank lever comprising a
handle portion 18 and a rearwardly pro-
5 jecting arm 19. The bracket 17 is formed
with an arcuate toothed portion which may
serve to receive the usual spring-pressed
pin carried by the lever, for the purpose of
holding the lever adjusted in various posi-
10 tions of annular displacement. Upon the
rear extremity of the arm 19, there is ro-
ta.tably mounted a bevel-edge colter 20 in-
clined slightly to the left from its upper to
its lower edge. Upon said colter there is
15 rigidly and concentrically mounted a
guard-ring 21, having a diameter consider-
ably less than that of the colter, said ring
. serving to limit the extent to which the col-
ter may enter the ground. Before tighten-
20 ing the bolts by which the bracket 17 is at-
tached to the member 15, the wedge member
17a may be adjusted horizontally to vary
the relation of the colter 20. to the scraper
blade.
25 To the rear face of the member 15 at its
left-hand extremity, there is secured a
bracket 22 formed with spaced lugs 23 at its
top and bottom. In said lugs is mounted
a pin 24 inclined slightly to the rear from
30 its lower to its upper end. Upon the pin
24, there is swivelly mounted a bracket 25
formed upon its top edge with an arcuate
series of teeth concentric with which there
is pivoted upon said bracket the apex of a
35 hell-crank lever comprising a handle por-
tion 26 and a rearwardly projecting arm 27.
Upon the rear end of the arm 27, there is ro-
tatably mounted a bevel-edged colter 28,
having substantially the same inclination as
40 the colter 20.- Upon the colter 28, there is
rigidly and concentrically mounted a
guard-ring 29 similar to that which has
been already described, and serving to per-
form the same functions.
45 Between the brackets 22 and the member
15, there is interposed a wedge 30, bolted
to the member 15 and formed with a hori-
zontal counter-sunk slot 31 receiving the
bolt head. The adjustment of the wedge 30
50 determines the extent to which the brackets
25 may swing inwardly about the pivotal
axis established by the pin 24.
The levers 18 and 26 respectively have
the -functions of vertically adjusting the
55 correlated extremities of the scraper. It is
apparent that by swinging either of said
levers rearwardly, the correlated colter will
be displaced beneath the pivotal point of
the lever, thereby raising the correlated
60 extremity of the scraper.The invention is presented as including
all such modifications and changes as prop-
erly come within the scope of the following
claims.
What I claim is: 65
1. In a road grader, the combination with
a scraper, of means for applying draft to
the same, brackets mounted upon the scraper
extremities, one of said brackets being
free to swing at one end upon a substan- 70
tially vertical axis, means for adjustably lim-
iting the swing of said bracket, bell-crank
levers pivoted at the free end of said
brackets, and a colter carried by one arm
of each lever. 75
2. In a road grader, the combination with
a scraper, of means for applying draft to
the same, brackets mounted upon the scraper
extremities, one of said brackets being free
to swing at one end upon a substantially 80
vertical axis, means for adjustably lim-
iting the swing of said bracket, bell-crank
levers pivoted at the free end of said brack-
ets, a colter carried by one arm of each
lever, and means carried by the brackets for 85
holding said levers adjusted in various po-
sitions of angular displacement.
3. Ina road grader, the combination with
a scraper, of means for applying draft
thereto, brackets mounted upon the scraper 90
extremities, bell-crank levers pivoted upon
said brackets, means carried by the brackets
for holding said levers adjusted in various
positions of angular displacement, colters
one of which is mounted upon one arm of 95
each lever, and means for. varying the
snaced relation between one. of said colters
and the, scraper.
4. In a road grader, the combination with
a scraper, of means for applying draft 100
thereto, brackets mountd upon the scraper
extremities, one of said brackets being free
to swing at one end upon a substantially
vertical axis, means for adjustably limiting
the swing of said bracket, means for vary- 105
ing the spaced relation between the other of
said brackets and the scraper, bell-crank
levers pivoted at the free end of said brack-
ets, means carried by the brackets for
holding said levers adjusted in various posi- 110
tions of angular displacement, and colters
one of which is mounted. upon one arm of
each lever.
In testimony whereof I have signed my
name to this specification in the presence of 115
two subscribing witnesses.
ELIE B. HARRIS.
Witnesses: -
G. W. HARRIs,
B. F. WIATLEY.Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,
Washington, D. C."
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Reference the current page of this Patent.
Harris, Elie B. Road-Grader, patent, January 18, 1916; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858823/m1/4/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.