Windmill. Page: 4 of 4
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818,013
The pawl is-arranged so that it may be dis-'
engaged from its ratchet by any suitable
means, so as to release the brake-levers when
desired.
5 The main feature of my invention resides
in the peculiar construction and arrangement
of the wind-wheel.-
In the operation of the device the blades
of the wind-wheel being constructed'and ar-
io ranged as before described the wind may
enter the wheel from any point and start act-
ing against the windward blades on their
concave sides and then pass into the wind-
chamber and inside the circle of the blades
15 after acting upon the most leeward blades,
and also will react on the opposite sides of
the blades which were initially windward
ones. In this manner the wind acts within
the circle of the blades as. in a vortex and
20 will drive the wheel with maximum velocity.
To arrive at a proper understanding of.the
advantageous results arising from the num-
ber and construction of blades hereinbefore
described, reference is to be particularly had to
25 Fig. 2 of the drawings, which includes with
the features of construction shown a dia-
grammatic portrayal which 1 ,,shall now de-
scribe. . The space from A to B shows the
volume of wind as it strikes the wheel. Ar-
30 row No. 1 represents the direction in which
the wheel will revolve, and arrow No. 2 in-
dicates the direction of the wind. The parp
ticular construction of blades produces by
the curvature of said blades a shield that will
35 throw off the wind that strikes the right-
hand side of the wheel; otherwise this wind
would greatly retard the motion. The ref-
erence-letter X indicates the points from
-which to the outer circle the blades form the
40 shield as the blades.come around to the right-
hand side of the wheel. D indicates by the
dotted line the line to be drawn through the
center 'of . the wheel, beginning at the outer
edge of the blade a, then. touching the inner
45 end of blade h, also the inner edge of blade d
and the outer edge of blade e. Similar lines
are drawn across the wheel, so that it is di-
vided into the eight sections, as before de-
scribed. Now the position of the blades
50. placed on these sections partly -forms the
shield before mentioned on the right-hand
side of the wheel and also forms the openingto receive the wind on the Ieft=hEmnd side.
Furthermore, this same position of blades
feeds the wind received into the wheel to the 55
blades that are at the right-hand side and
rear portion of the air-chamber at the center
of the wheel. Any other position of the
blades would not properlyfeed the wind to the
right-hand and rear blades. Hence it will be 6o
seen that the curvature of the blades partly
forms the shield to throw off the wind. on the
right hand, thus protecting the wheel from
wind that would otherwise retard the motion.
If the curvature is less, it is evident that it will 65
flatten the blade, and thereby increase the re-
sistance on the right-hand side of the wheel
and retard the motion. Again, if the cur-
vature is greater than that. described with
my invention it will to some extent' choke 70
the left-hand side of the wheel that receives
the wind, thereby also retarding the motion
and lessening the force or working power of.
the wheel. The blades are individually dis-
tinguished from each other by reference-let- 75
ters a b c d ef g h. It is of course to be un-,
derstood that the wheel may be made of any
length and diameter.
Having thus described the invention, what
is claimed as new is- 8o
A wind-wheel comprising spaced-apart
heads, a circular series of transversely-curved
blades secured to said heads and held there-
between, the outer edges of said blades being
arranged in a circle and the inner edges of 85
saidilades being also arranged in an inner
circle which forms' a wind-chamber at the
center of the .wheel, the inner edge of each
curved blade being located at a point where
a line drawn therethrough and through the 90
center of the wheel will intersect the outer
e'ge of the next blade in advance, and each
of said blades, being concavo-convex in cross-
section, the cross-section thereof lying in an
arc struck from the outer circle of the wheel 95
to the inrer circle forming the wind-chamber,
the radius of said are being equal to one-
quarter the diameter of the wheel.
In testimony whereof I affix my signature
in presence of two witnesses.
ROBERT S. BARTLETT. [L. s.]
Witnesses:
V. Y..Woon,
C. A. MORRIS
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Reference the current page of this Patent.
Bartlett, Robert S. Windmill., patent, April 17, 1906; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth510664/m1/4/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.