Flying Machine Page: 4 of 6
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1,294,774
points 15 along the horizontal tie-rod 9 and
separated and preferably equidistant points
17 on the forward edge member 5.- The con-
struction is such that the struts 13- and 16
5 will intersect in the manner shown.
In a similar way, there are series of struts
18 and 19 connected between points along
the rear edge members 7 and 8 and the hori-
zontal tie-rod 10, as will be clear from Figs.
10 2 and 3.
Similarly, the other faces of the tetrahe-
dral central framework comprised between
the edge members 1, 4 and 7, and 1, 5 and
8, are supplied with struts in a like order
15 and arrangement.
The lateral portions of the framework are
similarly built up in tetrahedral formation,
20 and 21. indicating forward edge members
at the left part of the machine, and 22 and
20 23 rear edge members, all of which are con-
nected at their lower ends to the lower edge
member 2. The upper ends of these edge
members 20, 21, and 22, 23, are connected by
projections of the horizontally extending
25 tie-rods 9 and 10.
At the opposite side of the framework the
forward edge members are represented at
24 and 25, and the rear edge members at 20
and 27, all of which are joined to the lower
so edge member B. Similar extensions of the
tie-rods 9 and 10 serve to connect the upper
ends of such edge members 24, 25, and 26, 27.
The upper ends of the forward edge mem-
bers 21 and 24, and the forward ends of the
as rear edge members 23 and 26, are connected
together by a horizontal tie-rod 28 which
forms a common part of the two lateral tet-
rahedral frames, and in which these frames
coincide. 29 and 30 represent tie-rods that
40 join, respectively, the upper ends of the.
front and rear edge members 20 and 22, and.
25 and 27, and which form with the common
tie-rod 28 and the projections of the rods 9
and 10, horizontal frames forming the upper
45 part of the combined framework.
Lying in that face of the left lateral part.
of the framework which is comprised be-
tween the edge members 20 and 21 and the
projection of the tie-rod 9, are two series of
50 struts 31 and 32, which are connected in a
manner similar to the struts -as above de--
scribed.
Struts 33 and 34 of a similar character,
lie in the face comprised between the rear
55 edge members 22 and 23 and the projection
of the tie-rod 10.
At the right side of the frame there are
similar struts 35, 36 and 37, 38.
Having reference now to the side eleva-
60 tional view shown in Fig. 1, which shows the
face of the right portion: of the framework
comprised between the edge members 3, 25
and 27 and the upper horizontal tie-rod 30,
39 and 40 designate other struts lying in the
65 plane of this face and intersecting in a nzan-ner similar to the other struts as hereinbe-
fore described. -
It will. be noted from an inspection of
Figs. 2 and 3, that the upper portions of the
diverging edge members form parts of over- 70
lapped tetrahedral figures, and act in the ca-
pacity of struts for adjacent tetrahedral
frames.
As seen in Figs. 1 and 3, it will be plain
that there are provided other horizontal tie- 75
rods 41, 42 and 43, in any suitable number,
extending in parallelism with the-upper tie-
rod 30, and connected between points on the
edge members 25 and 27, at which points the
ends of the struts 39 and 40 join thereto. 80
SFigs. 2 and 3 show similar tie-rods 44, 45
and 46, connected between the rear edge
members 26 and 27, and connected thereto
at points.where the ends of the struts 37 and
38 join therewith. In Fig. 3 alone are shown 85
the tie-rods 47, 48 and 49, they being con-
nected between points on the forward edge
members 24 and 25, where the struts 35 and
30 are attached thereto. Also, in Fig. 3, may
be seen the tie-rods 50, 51 and 52 which con- 90
nest between the front edge member 24 and
rear edge member 26 at points thereon where
the struts lying in these faces are attached,
but which struts are not shown in the draw-
ings. 95
The various tie-rods above described coin-
bine to form horizontal frames which pass
through the body of the tetrahedral'frame-
*ork, and which brace the same and impart
strength and rigidity thereto. For instance, 100
the tie-rods 41, 47, 50 and 44 form one of
such horizontal frames. A second horizontal
frame is formed by the tie-rods 42, 48, 51
and 45. A third such frame, in the right
lateral tetrahedral portion of -the frame- 105
work, is composed of the tie-rods 43, 49, 52
and 46.
Now, referring for clearness to the dia-
grainmmatic showing in Fig. 4, I also prefer-
ably provide a series of tie-rods or wires 53, 110
lying in the several horizontal frames just -
referred to and passing through the body of
the tetrahedral framework, such rods or
wires 53 being connected between parts of
such horizontal frames; for instance, the 115
horizontal tie-rods 44 and 47, as shown in
Fig. 4. These rods or wires 53 preferably
extend in.parallelism, and are joined to such
tie-rods 44 and 47 at points therein where
the struts intersect. The struts 37 and 38, 120
at- their intersections with the rods 44 and 53,.
may be connected to such rods- in order to
form a well bound and strong construction.
The right hand lateral part of the frame-
work has been .above described, and as the 125
central and opposite portions of such frame-
work are similar with-respect to the tie-rods.
horizontal frames and=wiresit is thought
unnecessary to repeat the description for
such parts. Iso2
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Reference the current page of this Patent.
Critchett, J. C. Flying Machine, patent, February 18, 1919; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1259430/m1/4/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.