US1721916A - Aeroplane - Google Patents

Description

23, E199 w. E. mmmsz Sm 4 Lima ABRQPLANE Filed April 16' 1929 Patented July 23, i929.

wlmi@ satana carica.

ROMAN B. manrsznwsxr, or MILWAUKEE, wisconsin.

AEROPLANE.

Application led April 16,

' minimizes the air resistance and which reduces the number of props or struts, or wires required for the wings of aeroplanes.

Furtherobjects of this invention are to` provide a wing bracing construction which provides additional strength for the portions of the wing, and which is so made that a single prop or strut may be employed for each wing and may be secured to the wing along the line through thecenter of lift of the wing.

A further object is to provide a novel form of aeroplane construction, in which the vision of the occupants is not obstructed by the props or struts for supporting the wings. g

Further objects are I to provide an aeroplane construction which will securely brace the wing in a novel and highly efficacious manner, and which is relatively simple, is of light weight, and may be easily applied.

An embodiment of the invention is shown in the accompanying drawings in which:

Figure l is a plan View of the portion of an aeroplane with parts broken awayshowing the bracing in place;

Figure 2 is a sectional view on the line 2-2 of Figure 1. v

Referring to the drawings, it will -bc seen that a monoplane has been chosen for illustration. The fuselage has been indicated by the reference character 1 and one of the wings by the reference character 2. These wings are provided with a forward beam 3 and a.

rear beam 4. They are also equipped with a forward strip 5 and a rearstrip 6, although the beams 3 and 4 take the major strain of the wing. Although the cross bracing transversely of the wing has been omitted from the drawing for the sake of clearness, it is to be understood that this cross bracing is employed in the usual manner. v

These wings are ordinarily braced from the fuselage merely by two lower struts. tfhese struts, however, 'do not offer any resist- 1928. Serial No. $270,360.`

ance to forwardly or rearwardly directed thrust exerted upon the wing. l

In order to take care-of the forward and rearward thrust, a diagonal bracing member 7 extends from lthe rear portion of the fuselagelto each of the wings. The diagonal bracing member 7 may be secured to the fuselage in any suitable manner, as by means of the socket bearing 8, shown in Flgures l and 2. This bracing may be of Wood, metal, or other suitable material. It extends, as is apparent from Figure 2, across the rear beam 4 and beneath the forward vbeam 3. It is secured to each of these beams in a rigid manner. An auxiliary brace 9 crossesthe main brace 7 and is secured to the upper side of the rear beam 4 and the lower side of the forward beam 3. These braces'are arranged to cross at the centerline of lift and a single strut or prop 10 extends from the lower portion of the fuselage to this point of crossing and is secured to these braces at their point of crossing.

Thus, a single strut or prop is employed and rearward or forward pressure and also maintains the angle of incidence unvarying. rfhe addition of the auxiliary brace 9 produces the effect as if the main brace 7 were attached at more than two points to the forward and rearward beams 3 and 4, and thus increases materially the rigidity of the structure. The cross braces also aid in preventing lateral distortion of the wing.

It is to be noted, also, that the main brace 7 when positioned as shown, together With the prop 10, permits a wing bracing that offers less air resistance in comparison with other external types of wing bracing.

It is to be understood that although the brace has been shown as extending rearwardly, it may extend forwardly under cer tain conditions,.and that although the strut or prop 10 has been shown as extending downwardly, it may extend upwardly under certain conditions.

Although the invention has been described in considerable detail, such description is in tended as illustrative rather than limiting as the invention maybe variously embodied f I claim:

1. An aeroplane comprising a fuselage wings projecting therefrom, diagonal braces extending from a rear portion of the fuselage forwardly and outwardly and attached to the Wings, and a strut extending upwardly from the lower portion of the fuselage beneath the wing to each of the diagonal braces.

2. An aeroplane comprising a fuselage, a pair of wings projecting therefrom, a main diagonal brace for each of said wings, said brace extendin from a rear portion of the fuselage into te win and -forming a diag- Ona-l thrust receiving race to reenforce the wing against lateral thrust either directly forwardly or rearwardly, and an auxiliary diagonal brace secured to said first mentioned diagonal brace and extending transversely thereto and attached to the win 8. An aeroplane comprising a uselage-having a pair of outwardly projecting wings, each-of said wings being provided. with a front and a rear beam, a diagonal main brace lfor each of said wings, said diagonal brace einv fuselage behind the wing and extending across the forward and rear beams and secured thereto, and a strut extending upsecured adjacent a rearI portion of: thean' auxiliary diagonal brace extending across the front and rear beams and terminating adjacent said beams and secured to said main diagonal brace, and a strut extending upwardly from the fuselage beneath the winfr and secured to said braces at their point o crossing.,

5. An aeroplane comprising a fuselage, a. pair of outwardly projecting wings, each of said wings having a forwardbeam and a rear- Ward beam, a diagonal main brace for each` of said wings secured to a rear portlon ofthe fuselage and. extending overl the rear beamyk and beneath the forward beam and attached?- the county of Milwaukee and State: of Wiscousin.

B. MALISZEWSKI.

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