US1528970A - Aeroplane - Google Patents

Description

March 10, 1925. 1,528,970

R. A. GRIFFITH AEROPLANE Filed March 2 1924 m P 7 INVENTOR Patented Merc- .l@,

UNITED STATES RUPERT AUGUSTUS GRIFFITH, OF MORSEMERE, NEW JERSEY.

AEROPLANE.

Application filed March 26, 1924. Serial No. 702,045.

To all whom, it may concern:

Be it known that RUPERT A. GRIFFITH, a citizen of the United States, residing at Morsernere, in the county of Bergen and State of New Jersey, has invented certain new and useful Improvements in Aeroplanes, of which the following is a specification.

My invention relates to improvements in aeroplanes and has for its object to provide an aeroplane of the monoplane type de-. signed to ascend quickly, have the least w1nd resistance and great speed.

A further object of the invention is to provide shock absorbing means associated with the running gear adapted to absorb the shock to the plane incidental to landing.

Another object of the invention is to provide an aeroplane of the above-menzo'tioned character which is simple and'durable in construction, reliable and eflicient in operation and inexpensive to manufacture.

.Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawing, forming a part of this specification and in which like numerals are employed to designate like to parts throughout the same,

Figure 1, is a side elevation of the plane,

Figure 2, is a top view of the same, Figure 3, is a longitudinal sectional view of the wing, and, as 'Figure 4-, is a detail view of the shock absorber for the running gear.

Referring to the drawing, wherein for the purpose ofgillustration I have shown a preferred embodiment of my invention, the numeral 5 designates the fuselage of the plane having its nose 6 streamline shape and its tail '2 tapered. 'llhe under surface of the fuselage behind the nose is cambered forming a pocket 8, to facilitate the of 45 the fuselage. A propeller 9 is mounted in front of the fuselage and a pair of coelr pits 10 are positioned behind the propeller. The usual rudder 11 is hingeolly connected to the vertical stabilizer 12 and the elevators 5t? 13 to the horizontal stabilizers 14-. The stabilizers have their outer edges inclined forwardly towards the fuselage and are streamline shape to deflect the air currents so as not to interfere with the control of the ill 1 the spring having its other end connected 3 versely ext The wings 15 extend laterally from the sides of the fuselage having their trailing edges 16 converging inwardly towards the tail, so the wing spread is triangular in shape. The upper surface of the wings, at their leading edge, is of convex shape, as at 17, and the under surface is curved downwardly, as at 18, presenting a streamline shaped nose. To the rear of the nose the under surface of the wings are cambered, at 19. forming pockets to facilitate the lift of the plane. The covering of the wings is braced by suitable ribs 20, and guy wires 21 extending from the tripod 22 carried by the fuselage, brace the marginal edges of the wings.

On the ground the plane is supported at its forward end by the running gear 23 and at its rear end by the tail skid 24. As more clearly shown in Fig. 4:, the running gear is equipped with shock absorbing means consisting of a lever 25 pivotally connected to the bearing, plate 26, by the pivot pin 27, and having its end 28 pivoted to the block 29 slidably mounted in the vertical slot 30 and supporting the axle 34 on which the wheels 35 are mounted. The .opposite end 31 of the lever is connected to one end of the coil spring 32,

to the support 33 of the running gear.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that certain changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the sub- In an aeroplane, the con a fuselage having a streamline and a cambered por adjacent said now extending lat fuselage on a present a convened fuselage, and a pair of wings extending transversely extending concaved groove at horizontally from the sides of said fusea point in vertical alinement with the rear lage having their trailing edges converging portion of the convexed surface. 10 towards the rear of the fuselage, said WlIlgS In testimony whereof I afiix my signa- 5 having the upper surface of their leading ture.

edges raised to present a convexed surface, the under surface of said Wings having a RUPERT AUGUSTUS GRIFFITH.

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