US1470998A - Aeroplane control - Google Patents

Description

@en 16, w23. Lwagg R. E. MITTON AERPLANE CONTROL Filed Aug. 14. 1922 /N Vif/v we.

ToVaZZ fio/omit ma@ concern.

Yrammed oei.A 1e, .19213. l i

UNITED srafrfES r Ormes.: 1'

ROBERT ELVYNMTTTON, or SALT 11Min CITY, UTAH, 'AssIGNoB To yMi'.Tron-Bannay AEROPLANE CONTR-on COMPANY, or senceV Lann CITY, uTamracoaronATIoN on'.

K UTAH.

Annemans CONTROL. f

applicanoY :nea 'august 14, 1922.' serial 110.581,74?. i

Be it known that L ROBERT ELvYNZ'MiT- TON, a citizen of the United States, residing'y at Salt Lake City, in thel county of Salt Lake and State of Utah, have invented a new-and useful'lmprovement in aeroplane Controls,

i aeroplanes.

of which the following is a specification.

This invention relates to'a certainnew and useful controlling device'for aeroplanes, which consists of the novel arrangement of parts to be hereinafter described claimed. j One object of this'invention is to provide acontrol vwhichl vvill automatically maintain-` the lateral and longitudinal vstability of Another object lof 'this invention,y is "to provide al contro-l which 'will instantly guide Ythefrnachine in any direction, niodied manner, but Whenr'desirable, will krnake any l `unfaided by thepilot.

*Another object of correction necessary to -inantain' stability diilicult to place the aeroplane far frornfits natural flying attitude,- thus doing away vators, F the pilots seat,

- 'journaled in' the universal support' Y1' .1

pendulum lever 3 Yhaving a 'universal' support 7 andthe connecting` rod 2 ,one'end of. which is Vconnectedv tothe hand Vlever and the other end tothe pendulum lever.rk

'A pin 9" islplacedlthrough the lowerend of vtheV handle" leverl and 'j ournaled in the: sideofthe loearing't.r f.,

" Shafts 10 extending ffroni the sides Y Aof theuniversalsupport the ends thereof Q frestinginv hearings 10T secured' to the iside'- 130'A o1' 'the frame "The pen'clnilum leve-i 3l having pin 1 1ftherein4V thefenfds-llthe Q Y OQ" cured te' the fs'vvvelfbearngf 'T are shafts' 7 the ends thereof passing through hearjr.. ings 12 secure'dfto the side ofthe-frame 1. n

this iiiventiony is to" provide a control with which it would loe The shafts' passing out through the bearings 1`2-tl'1e Iends thereof having' horns 15V VVsecured'theretoY to which one 'end of the elevator control Wires 16 and 17 are attached.

lThe Wire `16 is attached tothe bottoni horn and to the top king post ofthe ele.- vator and is the Wire fo-rraising the elevator.

Wirel isattached tothe top horn'and to g thebottom king lpost ofthe Velevator andr is the Wire for lowering the elevator.

WiresplS and 19 fastened to thel control l at 2O and running k.through pulleys 21a-nd 22 to thebottom king posts of the ailerons andthe balance Wire'23 fastened tothe top king postof the fright aileronk and running ythrough '.pulleysvoperates the ailerons when the controlis moved to the right or left. The elevators are operatedY `When the contro-l is inoved forward or'loackivard.V

Banking', turning, ,ascending anddescenct, ing isfaecoinplishedin' thefollovving man# ner.;v in'oving the control handle l1 tov theV right inovespendulum 25 to the left Vraises right aileron vC and depress "left aileron D," thus causing aeroplane to bank or lean to the right. y l

i Moving Control handlel` to theleftmoves pendulum 25 to' the right, raises leftaileron D'andA depress right'arleron C, thus causing the Vaeroplane to'loank vor-lean to the left. g

Pushing control lever '1 ahead vmoves pendulumto the rear,l operates thehorns'15 inf'sucha Wayasto ydraav on the Wire 1'1" to vdepress the elevatorvvhich raise the tail and cause the aeroplane to'descend. y

yPulling control lever back moves penduluin to the front operatesV horns 15v in such a manner as to dran7 on Wire'l thus raising the elevators',depressfthe tail and causing the "aeroplane:toy climbV or ascend.

' The:y ff regoingmoveinents are those .inade by. the pilots handuponthe. eontrollever..` y j to" guide theaeroplaneu or down or tip it tothe vright-'or fleftl he followingldev'scribes the vrnovements fof the. plane away 'Y traina level living' -positioniand'shovvs how' .the automatic corrections take place; when the 'pendulunr isY left ,inV different relativev positions. Y d Itvvill be 4understoodl that tharudder 4opsok V f eratedfbylthe feethygneans ofA the rudder 1 l ha'r'Glis`=used in conjunction rWith any-of,k

theabove'movernents which involve ka fturn- Y vinginoveinenft"' nalniut Ythe ,vertical aXis. f no ifter the study f the drawingsof the in-y vention, it will be readily seen that since it isposs'ible to operate the pendulum as well as the controlling surfaces, whenever 'a V:movement is made by the hands with the ping `to the left would then:automatically operate the hand lever to the right, since Vthat it is obvious that the pendulum would then bein a positionV tothe left, and in so doing would operate the Vailerons to return the ship to a level position, then all controls would beneutralized. f

It is stated above that the ship turns its.

y kcontrolv lever to the left under the aforesaid circumstances, this it does not' really do,

but, it accomplishes practically the saine thing, because the ship turns about the longitudinal axis of the machinejleaving the controlA lever and pendulum stationary,

thereby operating the control more effeci Ltively and exactly than if the lever itself 39 were moved to accomplish the sameresult.

VThefoperation of the 'ailerons by means of the control lever isl lfully explained in ,the paragraphs on operation. lllhen the ship "tips to the right kor opposite to the above all movements and corrections for same are o exactly lopposite or vice-versa to the above.

Having disposed dfthe lateral oscillations Vof the 'aeroplane in llightin this manner.

van'ces.

l/Verwill now take the longitudinal disturb- Thus if .an upwardk current of air should strike the `tail of the machine it would throw it nosedown or in a position todescend, lwhich it would immediately do.

Injthis case it :would be lseen that with the ship was .tipping forward, `it would leavethe pendulum inexactly' the same po` sition as it would be if the lever was` pulled,y back when the ship Y 4was y level, or other words the pendulum would Ybe hanging forward, the lever would be automaticallyi Y thrown back, thus giving the proper'correcf tion, since thisunovement, as explained in the. paragraphsk on operation raises the elef J that` would tipk it backwardor nose up the vators thereby depressing the tail to a level 4.position,whenall parts are neutralized because the pendulum Sthenin dead center, If'thevship should strike a current of air operationw'ould be opposite from the above injelvery.detail.,V i l lj Thesingle, lateral andilongitudinal. innove-k` ments ofgthe ship,` taken separately having l' beenfdescribedf I will,` give an explanation Y* f of .the more complicated, combined, lateral' Y,

and longitudinal inlovenientsfand corrections,"y

Thus if jan yupward current of air shouldv simultaneously raise the vright wing and tail out of a level position, the ship tipping to the left yand forward, would then automatically voperate the lever to the right and backward, since itis obvious that the pendulum would then be in a position to the left and forward, and in so doing would operate the ailerons and elevators to return the ship to t-helevel position, thus tipping lever backward and to the right rocking elevator horns on the end of the bearing shafts backward, thereby raising elevators,

neously raise the left wing and tail out ofI the level position, the control Vworking through ythe principles' explained above, would automatically inove the lever to the left and'backward, thus depressing the right 'aileron 'and raising the left aileron and the elevators causing the ship to return to a level position. y i

o lf ra current of air should simultaneously raise the rightl wing and depress the tail out of level position the control would automatically move the lever to the right and Y forward, thus depressing the left aileron andl raising the right aileron and depressing the elevators causing the ship to return to level. lf a current of air shouldsimultaneously raise the left wing and depress .the tail out of level position the control would automatically move the lever to the left and forward thus depressing the right aileron and raise the left aileron rand depress the elevators, and causing the .ship to return to a level position. j

Havingthus described my invention what I claim as new 'and desire to secure by Letters Patent, is; f j

l'.y In acontrol for aeroplanes of the character described, comprising a control lever,

ra pendulum,leverfand a connecting` rod pivotably connectingsai'dcontrol lever and pendulum lever together, a universal sup-. port for said control lever, said control lever,

having agpin therein, said pin being journaled in saiduniversal support, said univer-V sal support having shafts thereon, means -for securing said shafts to the aeroplane, an-

other'universal support for said pendulum lever,-rsaid pendulum` lever. having a pin therein, said' pin being Journaled in said otheru'niversal support, said other universalv ysupport having lshafts thereon '/'passing through Abearings secured to theside of the -i aeroplane the ends having horns secured thereto tov which the wires of the elevator are attached, means on Ysaid pendulm lever to secure lthe control Wires to the ailerons.

'2. In an .aeroplane control of the character described, comprising a control lever,

lum lever tocontrol theo-peration of th ailerons. Y r y 3.`In an aeroplane control of thecharacter described, comprising a hand control lever, a connecting rod, a pendulum lever and a univers-al support for each of said levers, said 'connecting rod for connecting said hand control lever and pendulum` lever together, shafts on said universal supports resting in bearings secured to the sides of v the aeroplane, horns on one set of said shafts Y f having the elevatorcontrol Wires attachedV thereto, aileron control Wires attached to said pendulum lever and means for securing v said Wires to said pendulum lever.

In Witness whereof I aflxy my' signature. ROBERT ELVYN MITTON.

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