Plumb-Level. Page: 3 of 3
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1,085,165
bars, the bearings being such as to produce
a minimum of friction. Upon said pintle
there is mounted fast a pointer 14, tapered
at both extremities which extremities are
5 very slightly spaced from the inner edge of
the -front surface of the ring 5. One-half
of the pointer 14 will be considerably larger
and heavier than the other half, thus caus-
ing the pointer to constantly occupy a ver-;
10 tical position such that its center of gravity
will be beneath the pivotal support. The
inner diameter of the ring 5 is less than the
diameter of the aperture 2, an annular por-
tion of the lateral face of the ring thus be-
15 ing exposed through said aperture 2, upon
which exposed portion is provided a scale
indicating degrees ranging from 0 to 90.
In the drawing, this scale is shown as extend-
ing only over one quadrant of the ring, but
20 it is to be understood that all four quadrants
of the ring may be similarly graduated.
The figures of the scale carried by the ring
are so disposed that when the leveling bar
is horizontal, the pointer will indicate 0
25 upon said scale and when the leveling bar
is vertical, the pointer will indicate 90 de-
grees upon the scale. Similarly in any in-
termediate positions of the leveling bar be-
tween horizontal and vertical, the angle at
30 which the bar is inclined will be indicated
by the needle upon the scale. Into each
lateral surface of the leveling bar, there is
set a -circular glass plate 15 concentric with
the aperture 2 and covering the same. Each
35 of said glass plates is retained in place by
a ring 16 secured by screws or other suit-
able means to the correlated surface of the
leveling bar and having its inner edge over-
hanging the outer edge of said plate. The
40 rings 16 are set into the correlated surfaces
of the:bar 1 0so that they are flush with said
surfaces.
The above-described plumb level is far
superior to the level now in common use
45 since it serves not only to indicate when a
level has been found, but indicate the various
angles in degrees at which the level may be
inclined.
The invention is presented as including
50 -all such changes and modifications as prop-1erly come within the scope of the following
claims:
What I claim is:
1. In a plumb level, a level body having
a circular transverse opening intermediate 55
its ends, transparent plates closing the open-
ing at each side of the body, the body hav-
ing a vertical longitudinal slot over its
opening and a semi-circular groove in the
bottom of the- opening in the vertical plane 60
of the slot, shoulders at opposite sides of
the groove within the opening of the body,
a scale ring resting in the groove and ro-
tatable in the slot of the body, lugs project-
ing from the periphery of the ring adja- 65
cent the shoulders, recessed bearing plates
mounted on the shoulders, adjusting screws
engaging in the lugs and bearing in the re-
cesses of the bearing plates, a weighted
pointer pivotally carried by the ring, and 70
a .closure plate mounted on the body over
the slot and concealing the screws.
2. In a plumb level, a level body having
a circular transverse opening intermediate
its ends, transparent plates closing the open- 75
ing at each side of the body, the body hav-
ing a vertical longitudinal slot over its
opening and a semi-circular groove in the
bottom of the opening in the vertical plane
of the slot, shoulders at opposite sides of the 80
groove within the opening of the body, a
scale ring resting in the groove and rotatable
in the slot of the body, lugs projecting from
the periphery of the ring adjacent the shoul-
ders, recessed bearing plates mounted on the 85
shoulders, adjusting screws engaging in the
lugs and bearing in the recesses of the bear-
ing plates, bars secured to opposite sides of
the ring diametrically thereof, a weighted
pointer having pivotal bearings in the bars 90
and mounted therebetween, and a metal plate
secured on the body and closing the slot.
In testimony whereof I have signed my
name to this specification in the presence of
two subscribing witnesses.
CALEB C. RUTLEDGE.
Witnesses:
D. B. CARR,
J. S. MURRAY.Copies of this patent may be obtained for live cents -each, by addressing the " Commissioner of Patents.
Washington, D. C."2
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Rutledge, Caleb C. Plumb-Level., patent, January 27, 1914; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858592/m1/3/?rotate=90: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.