Grade-Indicator. Page: 3 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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1,200,'103
20 is a combination counterweight and bevel
gear wheel, and is formed of an annulus 21
having a series of bevel teeth cut therein,
and having its lower half formed as a shoul-
S der casting which will cause the balance
wheel to gravitally seek a normal position
by swinging on its axis in accordance with
the change in inclination of the instrument
transversely of its axis. Meshing with the,
;J teeth of the balance wheel 20 is' a smaller
bevel gear 22 which is fixed upon the shaft
16, so that the movements of the balance
wheel will be communicated to the shaft 16
and through the latter to an indicating
18 hand 23 secured upon the forward end of
the shaft to overlie the dial plate 6. The
hand 23 'is frictionally mounted upon the
shaft 16, so that by relative movement, of
the hand upon the shaft the instrument may
20 be adjusted for zero position, a knurled
head upon the rear end of the shaft 16 per-
mitting the latter to be fixedly held while
the hand is adjusted thereon.
The dial plate 6 is provided with two: sets
25 of graduations which are concentrically ar-
ranged, and are to be read, in connection with
the hands 14 and 23. The outer set of gradu-
ations 24 is divided into degrees, which read
from the bottom of the dial in both direc-
80, tions toward the top in sets of 180 degrees
each, and the hand 14 swinging thereover
indicates in degrees the lateral inclination
of the vehicle. The inner set of graduations
are divisions -indicating percentage, and in
85 the present case read from zero at the bot-
tom to twenty-five at the top, and as the
hand 23 swings thereover, represents the
percentage of the gradient over which ve-
hicles travel, and also the direction of the
40 gradient, whether it be up or down. Pref-
erably, one half of the dial plate, within the
inner set of graduations is colored so as to'
distinguish from the opposite half, thereby
providing a greater aid to the vision in
46 reading the instrument.
The instrument which has been described,
therefore, provides a direction indicating ap-
paratus for determining the lateral inclina-tion of the vehicle or craft upon which i+
mounted, and will simultaneously indica
the upward or downward progress of the
craft or vehicle- or the gradient of the road
over which it is moving. The construction
of the instrument is very simple, and its
manufacture, by reason of the small num- 55
ber of parts and their comparative simplic-
ity, may be carried-out at a minimum cost.
What we claim as our. invention is:-
1. A grade indicator including a frame
adapted for securement to a vehicle, a tu- 6o
bular shaft journaled in the frame, a second
shaft rotatably mounted in the tubular
shaft, indicating hands carried on adjacent
ends of the shafts, a dial plate cooperating
with said indicator hands, a balance weight 65
suspended from the tubular shaft, a shaft
journaled in the-frame and extending trans-
versely of the second named: shaft and in
gear connection' therewith and a balance
weight carried lby the transverse shaft. 70
2. A grade indicator including a frame
adapted for securement to a vehicle, a tubu-
lar shaft journaled in the frame, a second
shaft rotatably mounted in' the tubular
shaft, indicating hands carried on adjacent. 75
ends of the shafts, a dial plate cooperating
with said indicator hands, a balance weight'
suspended from, the tubular shaft, a shaft
journaled in the frame and extending trans-
versely of the second named shaft, a disk 80
mounted on the transverse shaft and having
one side portion cut away inwardly of its
peripheral edge whereby its other side por-
tion forms a balance weight on the shaft, a
peripheral series .of gear teeth formed on 85
the disk and a gear wheel on the second
named shaft meshing with the'teeth of the
disk.
In testimony whereof, we affix our signa-
tures in the presence of two witnesses.
JESSE B. SHEMELEY.
MARION E. SHEMELEY.
Witnesses:
CHAs. L. GwvER,
W. M. PAREER.
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Shemeley, Jesse B. & Shemeley, Marion E. Grade-Indicator., patent, January 7, 1919; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1259405/m1/3/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.