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Патент USA US2404922

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July 30, 1946.
'
w. R. PADGETT
2,404,922
MINIATURE SELF-PROPELLED AIRPLANE
Filed Feb. 20, 1945
2 Sheets-Sheet 1
July 30, 1946.
w. R. _PADGETT
2,404,922
MINIATURE SELF-PROPELLED AIRPLANE
'Filed Feb. 20, 1945
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2 Sheets-Sheet 2 '
2,404,922
Patented July 30, 1946
UNITED ‘STATES PATENT OFFICE
2,404,922
MINIATURE SELF-PROPELLED AIRPLANE
William R. Padgett, Pasadena, Tex.
_
Application February 20, 1945, Serial No. 528,927
6 Claims.
(01. 46—-77)'
2
1
This invention relates to miniature self-pro
pelled airplanes.‘
-
\ :
rudder 5 pivoted to move on a vertical axis and
also has the elevators 5, pivoted to move on a
horizontal axis.
Within the fuselage there is a horizontal plate
An object of the invention is to provide an air
plane of the control line type whose rudder will
l, forming a supporting frame. Above the frame
normally be maintained, by a control line, in po in there is a bell crank formed with the cross-head
sition to keep the craft in its outer path, or course,
8 and the lever-arm 9 and beneath the frame
in ?ight, while the control line is taut; with
there is a bell crank formed with the cross-head
means for automatically moving the rudder out
Ill and the lever~arm ll. These bell cranks are
wardly, should the control line become slack, as
in the, event the craft should be forced inwardly 10 mounted to rotate ona common pivot l2 and are
held spaced from the frame ‘I by the upper and
off its normal path by a side wind, so that the
lower washers l3 and I4.
craft will be guided, by the rudder, outwardly into
Connected to the elevators there is a depend
its former, or normal, course.
ing horn
and a rigid link I5 is pivoted, at its
Another object of the invention is to provide
means for maintaining the elevators in position 15 forward end, to one end of the cross-head 8 and,
at its other end, to the lower end of said horn.
to keep the craft at a selected elevation, in ?ight,
One end of a pull spring fl’ is connected to the
with an elevator control line and means connect
other end of the cross-head and its otherend is
ing said line to the elevators whereby the posi
connected to the post l8 upstanding from the
tion of the elevators and the elevation of the craft
frame.
'
20
may be controlled and varied.
There are spaced stops l9 and 20 on the frame ‘I
A further object of the invention is to provide
the former of which extends above and beneath
means for controlling an aileron of one of the
the frame. The range of movement of the arm
wings, through one or both of the control lines,
9 is limited by these stops.‘ " '
' '
I
whereby the craft may be laterally stabilized.
The rudder 5 has a laterally extended horn 2|
The invention also embodies a novel type of 25 and a rigid link 22 is pivoted, atone endjto this
grip, or handle, whereby the control lines may be
horn and, at itsother end to one end of the
manipulated.
cross-head 10. One end of a pull spring 23 'is;
With the above and other objects in view this
connected to the other end of the horn Ill and
invention has particular relation to certain novel
the other end of said spring 23 is connected to
30
features .of construction, operation and arrange
the post .24 which depends from the frame 1.
ment of parts an example of which is given in this
There is a stop 25 which depends from the
speci?cation and illustrated in the accompanying
drawings, wherein:
_
Figure 1 shows a perspective view of the air
craft, embodying the invention and partly brokenv
away.
Figure 2 shows an outer end viewof one of the
wings, or planes, showing the aileron control.
frame "I and the range of movement of the mm
H is limited by the stops I9, 25 between which it
works.
There are the flexible control lines 26, 21 which
are connected, at one end, to the free ends of
the respective arms 9 and H. At their other
ends the line 26 is connected to the upper end
Figure 3 shows a side view of the grip, or handle.
of the hand grip 28 and the line 27 is connected
Figure 4 shows a fragmentary, horizontal, sec 40
to the middle of said grip, as shown in Figures
tional View.
1 and 3.
Figure 5 shows a fragmentary, vertical, sec
In flight the craft will follow a, substantially
tional view.
circular course about the operator on the ground
Figure 6 shows a fragmentary, bottom view,
by whom the grip 28 is held. The centrifugal
partly in section, and
Figure '7 shows a fragmentary, plan view of one
of the wings, or planes, partly in section.
Referring now more particularly to the draw
ings the numeral I designates the fuselage as a
whole at the forward end of which is the motor
driven propeller 2.
Fixed to the fuselage are the laterally extended
force of the craft will hold the line 21 taut with
the spring 23 under tension and with the rudder
in intermediate, or neutral, position, Should the
craft encounter a side current which forces it
inwardly, with respect to the circle of ?ight, the
control line 21 will, at once, become slack and
the spring 23 will act, through the cross-head l3
and link 22 to move the rudder outwardly, with
wings, or planes, 3, provided with ailerons one of
respect to said circle, thus causing the craft to
which is hinged to move on the hinges 4.
resume its original course.
55
The rear end of the fuselage has the vertical
3
2,404,922
At
While the craft is in ?ight the pull on the
line 26 will ‘normally balance the pull of the
spring I1 and maintain the elevators 6 in hori
eye and a control line connected, at one end, to
the craft and passing through said eye and whose
other end is adapted to be held by an operator
zontal position so as to keep the craft in a level
on the ground.
course. Should the craft tend to descend the pull
3. In a miniature, self propelled, aircraft hav
on the line 26 may be increased, by suitable ma
ing a fuselage, laterally extended wings, or planes
nipulation of the grip 28, and this will actuate
and a rudder pivoted to move on a vertical axis;
the head 8 and link Hi to raise the elevators and
a cross-head pivotally mounted on the fuselage
guide the craft upwardly; on the other hand
to move on a vertical axis, a link connected to
should the craft climb the line 26 may be released e the cross-head and to the rudder, a yieldable
and thereupon the spring II will actuate the head
member connected to the cross-head and effective
8 and link [6 and the elevators will be lowered
to normally hold the rudder in one position and a
which will cause the craft to descend. The ele
control line connected to the cross-head through
vation of the craft may, therefore, be controlled
which the rudder may be held in another position
by manipulating the line 26.
when the craft is in ?ight.
In order to maintain the craft stabilized lat“
4. In a miniature, self propelled, aircraft hav
erally the aileron 29 is hinged and a forwardly ex
ing a fuselage, lateral wings, or planes, thereon, a
tended, rigid arm 30 is rigidly secured to the for
rudder mounted to pivot on a vertical axis and an
ward edge thereof and extends above the corre
elevator mounted to pivot on a horizontal axis;
sponding Wing 3. The free end of this arm has
cross-heads pivoted on the fuselage, rigid links
the upper and lower eyes 3| and 32 through which
connecting one cross-head with the rudder and
the respective lines 25 and 21 pass as shown in
the other cross-head with the elevator, control
Figure 1. The arm 38 works through a vertical
lines connected to the cross-heads through which
guide 33, upstanding from the corresponding
the rudder and elevator may be moved to selected
wing, as shown in Figures 1 and 2. Should the 1 positions, yieldable members connected to the
craft bank toward the operator the lines 26, 2‘!
cross~heads effective to move the rudder and ele
will remain taut and will cause a corresponding
vator to other positions, when the control lines
relative upward movement of the arm 35} and
downward movement of the aileron 29 which will
tend to stabilize the craft; on the other hand
are slack.
5. In a miniature, self propelled, aircraft hav
ing a fuselage, lateral wings, or planes, thereon, a
rudder mounted to pivot on a vertical axis and
should the craft bank in the opposite direction
the aileron 29 will be elevated by the arm 39 and
the craft stabilized.
On the wing opposite the aileron 29 there is
also an aileron 34. This aileron is attached to the ;
wing by means of metal plates 35, one end of each
plate being inserted into the wing and the other
an elevator mounted to pivot on a horizontal
axis; cross-heads pivoted On the fuselage, links
connecting one cross-head with the rudder and
the other cross-head with the elevator, control
lines connected to the cross-heads through which
the rudder and elevator may be moved to selected
positions, yieldable members connected to the
cross-heads effective to move the rudder and ele
ends thereof into the aileron 34. These plates
are of bendable material but when bent they will
remain bent so that the aileron 34 may be ad
justed up or down to obtain the best results and
' vator to other positions, when the control lines
will remain in that position until re-adjusted.
Thus the forward direction, the elevation andv
the lateral stability of the craft is at all times
under the control of the operator.
What I claim is:
1. In a miniature, self propelled, airplane hav~
ing a fuselage, laterally extended wings on the
thereby limiting the movement of the rudder and
elevator.
6. In a miniature, self propelled, aircraft hav
ing a fuselage, lateral wings thereon, a rudder
are slack and stops on the fuselage for limiting
the range of movement of the cross-heads and
mounted to pivot on a vertical axis and an ele
vator mounted to pivot on a horizontal axis:
cross-heads mounted to move on a common pivot
fuselage one of which is provided with an aileron
which is hinged thereto, a control line attached
at one end to the airplane and whose other end
is adapted to be held by an operator on the
on the fuselage and having extended arms, links
connecting one cross-head with the rudder and
the other cross-head with the elevator, control
lines connected to the arms through which the
rudder and elevator may be moved to selected
ground and an arm rigidly connected to the ailer
on operatively connecting the aileron with the
control line whereby the aileron will be moved
downwardly as the Wing is lowered and moved up
wardly as the wing is elevated.
2. In a miniature, self propelled, aircraft hav~
ing a fuselage, laterally extended wings on the
fuselage, an aileron hinged on one of the wings,
a rigid arm ?xed to the aileron and whose free
end is turned horizontally and formed with an
Ll
positions, yieldable members connected to the
cross-heads effective to move the rudder and the
elevator to other positions when the control lines
are slack and means for limiting the range of
movement of the cross-heads and thereby limit
,’ ing the movement of the rudder and elevator.
WILLIAM R. PADGETT.
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