US1935534A - Device for winding model aeroplanes - Google Patents

Description

Nov. 14, 1933. c. M. WILMOT El AL 1,935,534

DEVICE FOR WINDING MODEL AEROPLANES Filed March 51, 1932 2 Sheets-Shet 1 My 24W V I WZJW 4, 3- c. M. WILMOT El AL DEVICE FOR WINDING MODEL AEROPLANES 2 Sheets-Sheet 2 Filed March 31, 1932 *4 ATTORNEY Patented Nov. 14, 1933 FOR WINDING MODEL: :AEROPLANES Dev-Ion Charles Mandeville Wilmetand John' Mandeville wilinoh llondon, England I f Applicant; Marcn tlyle z, Serial No. 602304;

- and in Great Britain April 14, V a

This inventionrelates' to devices'for' use in: windingmodelor toy aeroplanes; j

'Ihe principal object of the invention is'to.

10 an improved form of container for a model aeroplane having detachable wingslsuch, for example, as those of the kind set forth inUnited States patent application Serial No; 525,GO4=ffiled 24th March 1931.

Qther objects' of after appear. Y I I I In order that theinvention may be clearly un the mveh n will hereinderstood and readilycarried into eifect, one con-- struction in -accordaneetherewitn will, now 'be '2 described by way of examplewith referenceto the accompanying .drawings,-in which Figure 1 is a plan of a combined containing box. and. winding device; 7

Figure .2 is a longitudinal section throughthe samebox, and m Figures 3 and 4 are sectionson the lines III- III and IV-IV respectively,of Figure 1.

Referring to the drawingsthe devi e consists of a rectangular cardboardibox 1 having atone end a metal casing 2 m'which' are-journalledtwo spindles V3 and4. The spindle 3 projects through an aperture 5 in the end of the box 1 and is made.

square in -cross-section so as to receive .a wind ing key 6. The spindle 3 is connected; through step-up gearing 7; 8 .to drive the'spindle. 4', and a pawl in the form of .a spring 9 is provided to prevent unwinding of the air-screw or'jaccidental winding thereof in the :wrong directions V The-box is intended to receive a model aeroplane of the kind illustrated in; United States patent application-Serial No. 525,004=,and such an aeroplane is shown at 10 ,inchain lines in Figures 1 and 2. The box is internally so fitted that-the fuselage of the ae'roplane 10 enters a v substantially- U-shaped' slot; 11 in v a transverse partition 12, while part of the fuselage rests upon a cradle 13 and the wings pass through rectangular slots 14 'formed'inthejside' of, the box 1. When it is desired to wind the motor of: the aeroplane, the latter is advanced slightly in the box so that the air-screw shaft enters a hollow socket formed on the end of the. spindle 4. and the air-screw itself is; engaged by7 an L- shaped arm 15 fixed on the end of-jthe spindle Rotation ofothe winding keygdwill,then serve to wind up the motor, and. the aeroplane will: be

held against rotation by vir'tuefof the engage- 'inentfof the fuselage in the Ufshaped slot 11 in.

the partition '12. The end r the arm 15 is m elmedtotlie axis of'the air-screw at a slightly smaller angle than'the surface of the air-screw withiwhich 'itcomes in contact, as'shown .in Figurefl.. The result of this is that the point of the arm 15' does not tend to dig'into the air-' screw, but. during rotation the arm pullsthe air-screw, and thus the whole aeroplane, for- 'waras and'so causes the end 'ofthe' air sc'rew spindle. to enter the socket formed onthe'fend of the spindle 4. It is not, therefore, necessary toforce' the aeroplane forwards by hand during 7 the windingoperation. I v I The partition .12 constitutes partof a single length of "cardboard which is bent as shown to form two; small pockets or compartments, l6 and 17,.one of which may cohveniently contain a spare elastic motor and the other -the winding key wh'en the latter isnotin use. The partition 12 also. forms with the, casing 2 andthe pockets 16 and 1'7 a large pocket or compartment- 18 whichextendstcompletely across thewidth ,of 30 the box 1 and in which thefair-screw is'accorn- 1 modated both when the box is used as a container and when it is usedas, a winding device.

The i-cradle ld, which. is [also made. of card board, has two slopingsides as shown with a gap, between} the, upper edges and two substanv tially. triangular ends formed. withnotches 19 I and V. 20 which receive the fuselage. When the boxfis .to 'be used as a container, thewingsof the aeroplane aredetachedand ar'eflaid along the usides of the cradle where they. are held lsafel yfin' position by z rrieans of semicircular tongues '21 formed by making semi-circular slits and; then J bending outwards slightly the pieces of .material within theljslits, Ears 22 similarly I formedrare provided at" the rearward end of the cradle to locate thewings in position longltu di} nally. The wingsthusfiheld are shown in chain lines at 23in Figures .,1 and}; Whenthe wings are providedwith ribs which receive transverse spars projecting from the fuselage-as described in UnitediStates patent application serial No. 525,00,-the spars project across the tensor the wingsand hold the latter when theyiare'resting on the cradle. The cradle may easily be made. from' a singlehpiece. of cardboard, suitablyicut Y and bent, and has the additional advantage that it serves to prevent the aeroplane being-crushed if the sides of .the' boxfl'should be pressed in accidentally.

When the whole aeroplane is packed in the box, the latter may be enclosed within a deep cover 24 indicated in chain lines in Figure 2.

Of course, in all the constructions according to the invention any suitable multiplying driving connection may be inserted between the 'two rotatable spindles provided that it is sufficiently positive and does not slip when the motor is being wound. For example, instead of the toothed wheels illustrated, a gear train including bevel or crown wheels may be used or, again,-

screw of an aeroplane having two air-screws.

In the case of aeroplanes in which air-screws are arranged to rotate in diiierent directions, it is most convenient to drive the separate winding chuc'ksby means of small chains from the driving spindle, because one or more of the chains can be crossed so as to givethe desired reversal of rotation;

If desired an indicator may be provided to show the number of turns that have been given.

to theflair-screw during winding.

Although the invention has been particularly described in connection with toy aeroplanes constitu'ting scale models of full size aircraft, it may obviously also be applied to devices for winding spar machines in which there is no fuselage but simply 'a longitudinal spar or rod. The particular advantage obtained by means or the invention is that the box or frame can be held in one hand and the winding eifected by the other, whereas in'previous cases where a winderh'as been usedit'ha's been necessary either It? have two people present or to fix either the Winder or the aeroplane to some stationary object. i

1.'A"device for use" in winding the driving means of a'modelaeroplane comprising "in 'comination a box, a handle jou-rnalled in said box, connecting means -fortransmitting rotary movement of said handle relatively to said box to the driving means of a model aeroplane 'placedjin said box, and means incorporated as a part of the box structure in saidbox adapted to prevent movement of v the aeroplane relatively to said box as a result of torque reaction due to the winding of said driving means.

2.,A device for use in winding the driving means .of a model aeroplane comprising in combination a rectangular box, a metal frame inside said rectangular box adjacent one side thereof and fixed thereto, 'a driving rotatable spindle and a driven rotatable spindle both journalled in said metal'framaga handle located on the outside .of said box connected to said driving rotatable spindle, a'step-up gearing connecting driving and said driven rotatable spindles, means upon said driven rotatable spindle adapted to engage an airscrew of an aeroplane placed in saidbox andto cause said airscrew 'to-turn when said handle "is turned, and means in 'said box 'adaptedtopreventmovement of said modelaeroturning of said airscrew.

3. A device for use in winding the driving" means of a model aeroplane comprising in combination a frame adapted to engage a model aeroplane, a driving spindle and a driven spindle both journalled in said frame, a handle fixed to said driving spindle, a multiplying driving connection between said driving spindle and said driven spindle so arranged that the latter-will turn fasterrthan said driving spindle, an arm fixed substantially at right angles to said driven spindle, a lug fixed to said arm in a position remote from said driven spindle, said lug being adapted to contact with a blade of the air-screw of a model aeroplane engaged by said frame and rotate said airscrew upon rotation of said driven spindle, said lug being so shaped that it contacts aeroplane that upon rotation of said arm said modelaeroplane is urged towards said driven spindle, and centering means uponsaid driven spindle adapted to engage the centre of said airscrew when the latter is urged forward by said lug, said frame being so arranged as to prevent turning movement of said model aeroplane relatively to it as a result of torque react-ion due to the turning of "said airscrew. q T

4. A device for use in winding the driving means of a model aeroplane comprising combination a box, a cradle fixed inside said box and so shaped as to receive the fuselage of a model aeroplane and hold said fuselage against any tendency to turn about its'longi-tudinal axis, a handle journalled in said box, connec-ting me'ans attached to said box for transmitting rotary movement of said handle relatively to said box to the airscrew of a model aeroplane engaged by said cradle, and a multiplying drive incorporated in said connecting means and so arranged-that when said handle is turnedsaid airscrewis wound at a greater rate than therate at-whichsaid handle is turned.

,5. A toy comprising in combination 'a model aeroplane having a fuselage, a rectangular box, a cradle fixed in said box and adapted to hold the centre portion of the fuselage of said model aeroplane, a partition in said box formed with a slot 'located'so as to engage the nose of the fuse- 'lage of said model aeroplane when held by said cradle, said partition and said cradle -being operative to hold said model aeroplane against rota tion about its longitudinal axis, winding means fixed in said box adapted to wind the driving means of said model aeroplane when its fuselage is engaged by said cradle and said partition and a cover for closing said "box. 1 1

6. A toy comprising in combination a -mode'l aeroplane havinga fuselage, a rectangular box,

a strip i-n-said box so bent as to :form with "the walls of said box compartmentslocated at the said supporting means being adapted to locate said model aeroplane in a position such *thatit can be engaged by said winding :means and to prevent any tendency for said fuselage to rotate about its longitudinal axis. a

7. A device for use in winding the driving means of -a-model aeroplane comprising incom- '-bination a box, a frame inside.said :box adjacent one -'side thereof and "fixed thereto, a driving rotatable spindle and a driven rotatable spindle both journalled 'in said frame, a handle located on the outside of said box connected to said driving rotatable spindle; a multiplying driving connection between'said driving and driven rotatable spindles, means upon said driven rotatable spindle adapted to engage anairscrew of an aeroplane placed in said box and to cause 1 said airscrew to turn when said handle is turned,

and means in said-box adapted to prevent move ment of said model aeroplane as a result of torque porated as a part of the box structure adapted to prevent movement of the aeroplane relatively to the said box as a result of torque reaction due to the winding of said driving means. I

9. In a device for use in winding the driving means ofa model aeroplane; a box, gearing secured to the said box, a handle journalled in the box and operative to rotate the gearing, means for transmitting the rotary motion of the gearing to the driving means of amodel aeroplane placed in the said box, and means incorporated as a part of the said box structure adapted to prevent movementof the aeroplanerelatively to the said 7 box as a result of torque reaction due to the winding of said driving means. 1

CHARLES MANDEVILLE'WILMQT.

JOHN M. WILMOT.

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