US1371162A - Toy airplane - Google Patents

Description

C. H.l GRANT.

vTOY AIRPLANE. l APPLICATIONKFILED JAN. 7, 1920.

1,371,162I I f Patonted Mar. 8, 19,21..-v

IN V EN TOR.

4Q ATTORNEY.` Y

UNiTED -sTA'rEs PATENT OFFICE.

CHARLES H. GRANT, OF DAYTON, OHIO.

Specification of Letters Patent.

j Patented Mar. 8, 1921.

Application led January 7, 1920. Serial No.-349,850.

To all Hiom 'if may concern Be it known that l, Crianuis il. GRANT, a citizen ot the Vnited States, residing at Dayton, in the county ot' Montgomery and State of Ohio, have invented certain new and useful Improvements in Toy Airplanes, ot'

which the following is a specitication-` The principal object of the invention is to provide a to)v airplane in which the motor is longitudinally. disposed between a pair of frame members. r1`he chiet' advantage tov be derived from this construction is, that there is no tendency for the tension of the rubber motor to bend the longitudinal members out -of their horizontal plane, which is the case would be necessary -to hold the plane steady,

as in the case ot a single longitudinal memf ber.

Another object of providing two longi@ tudinal frame members, is to permit the fin to be firmly secured between their rear ends, and their` front ends to receive a simple socket litting through which projects the propeller` shaft.

lAnother object of the invention is to provide an under-carriage or chassis the struts and axles or" which, are in one piece.

Another object of the invention is to provide a chassis having an integral part which forms a spreader for the longitudinal members. p 1

Another object of the invention is to provide between the longitudinal Imembers and the main plane, an elevating block which gives the latter a greater angle of incidence than the tail.

Another object ofthe invention is to provide a flexible bearing fir the propeller shaft.

And still another object ot the invention is to provide a washer which turns with the propeller to preventthe wood of the latter being worn as in the case of ordinary round washers.

The preferred form of embodiment of my invention is illustrated in the accompanying drawings, of which Figure 1 is a top plan view of my improved toy airplane. And Fig. Q is a side elevational view of the latter.

Throughout the specification and draw-- ings, similar reference characters denote corresponding parts.

Referring to the accompanying drawings, the numerals 1, 1 designate two longitudinal frame members whose il'ront ends are received by the tubular limbs ot a metallic U- shaped socket 2. Secured between the rear ends of the longitudinal members 1, 1, by means of nails 1, et and the transverse ends of a hook 5, is a vertical lin G. lThe hook 5 preferably comprises a piece ot wire that is looped at its upper end in a horizontal plane and then bent downwardly and rearwardlv to form a hook which receives rubber strands T that form the motor of the airplane. The free ends lolf the hook 5 are projected laterally from opposite directions. through the ,longitudinal members 1. 1, and the Jfront portion of the lin G between them, and are then turned inwardly7 against the outer Yfaces ot the longitudinal members from which they issue, tirmly to secure the front portion ot the En between those members.

The rubber strands 7 forming the motor, pass forwardly between the longitudinal members 1, 1, to the hook end 8 of a propeller shaft 9 that loosely projects through the forward end of the socket Q into a propeller 10. Since the rubber strands 7 pass between the longitudinal members 1, 1, they will exert no torce to bend those members upwardly or downwardly out of their horizontal plane.

It is also an advantage to have two longi tudinal trame member, since they receive on their forward ends the U-shaped socket 2 which provides a flexible bearing for the propeller shaft whereby the propeller will not be injured when itstrikes the ground. Fitting the middle portion of the propeller 10 is a U-shaped washer 11 through 'which the shaft 9 loosely projects and which turns with the propeller to prevent injury to the wood ot which it is constructed, as is often the case when ordinary round washers are einj'iloyed.

The whee'ls12, 12 of the airplane turn on axles 1B, 13 preferably formed `ot wire. These axles arc the transverse integral portions of struts 14, 14, the forward free ends of which are turned around the longitudinal members 1, 1 just behind the socket 2. These struts then 4incline outwardly and downwardly to form the transverse axles 13, 13, and then project upwardly and rearwardly over the longitudinal members 1, 1

to form between them a transverse spreader portion 15 which holds the members` apart at their middle portions. Simplicity of construction and cheapness of manufacture are obtained by making the chassis in one. piece,

although it may be formed of several pieces without departing from the spirit Vof the inventioin Resting upon the tops of the longitudinal members .1, 1 is an elevating block 16, upon which is glued the frontportion of the main wing 17. This block gives the main wing aV greater angle of incidence than the tail pieceA 18 which is secured to tlie under side of the rear portions of tlie longitudinalfniembers 1, 1 by a rubber band 19. A rubber band 20 serres to secure the main wing to the longitudinal members 1, 1. It is thus seen that thet-wo longitudinal members 1, 1 provide at their middle portions a broad base for the ymain .plane to i'est upon, `and eliminate Ya fitting which would be necessary to hold the plane steady, it a single longitudinal member were employed` lHaving described my invention, I claim:

1. `In a toy airplane, the combination with a pair ot' longitudinal frame members, ot a rubber band motor, a vertical fin secured bevtween the rear ends of said frame members,

and a hook-shaped member Whose hook end is adapted to receive the rear end of the rubber band motor and whose shank portion is adapted to be passed through said longitu-v dinal members and fin for the purpose specified. Y

2. In a toy airplane, the combination with a pair of longitudinal frame members, of a rubber band motor, an element bent to hook band motor, a vertical lin whose lower edge received between the rear ends of said longitudinal members, and free ends on said hook-shaped element adapted to be passed through said longitudinal members and tin from opposite directionsiand bent inwardly against the outer faces of the longitudinal members from which they issue,

. being bent downwardly and outwardly, and

then late ally, to form axles, said wire ends then being -inclined upwardly and rearwardly over the middle portions of said longitudinal members, with the middle portion of said wire projecting transversely between said ,longitudinal members to spread them apart'.

In testimony whereof I have hereunto set my hand this 6th day of January, 1920.

' CHARLES H. GRANT.

Witness HOWARD S'. SMITH.

sha-pe adapted` to receiye the rear end of said

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