US1745081A

US1745081A - Aeroplane

Info

Publication number: US1745081A
Application number: US342923A
Authority: US
Inventors: Harry B Crumbaugh
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-02-26
Filing date: 1929-02-26
Publication date: 1930-01-28
Anticipated expiration: 1947-01-28

Description

Jan. 28, 1930. H. BQ CRUMBAUGH 1,745,081

r AEROPLANE Filed Feb. 26, 1929 3 Sheets-Sheet l Inventor Q By A itorneu Jan. 28, 1930. H. B. CRUMBAUGH AEROPLANE s sheets-sheet I 2 Filed Feb. 26, 1929 Inventor Jan. 28, 1930. gRuM H 1,745,081

AEROPLANE Filed Feb. 26, 1929 3 Sheets-Sheet 3 Inventor Attorney Patented Jan. 28, 1930 v HARRY B. CRUMBATlGH, OF GREENVILLE, TEXAS AEROPLAN E Application filed February 26', 1929. Serial No. 342,923.

The present invention relates aeroplanes and more particularly to a landing gear and launching apparatus associated therewith.

The prime object of the invention resides in the provision of means whereby the areoplane may be raised suddenly and quickly from the ground in the take off.

Another very important object of the in- 1 vention resides in the provision of an apparatus for throwing the aeroplane in the air "at the take off controlled by compressed air stored in a tank in the aeroplane.

Another very important object of the invention resides in the provision of a tail wheel for the aeroplane with an air brake associated therewith.

' A still further very important object of the invention resides in the provision of an 30 apparatus of this nature which is simple in its construction, easy to manipulate,

thoroughly efiicient and reliable in use and operation, and otherwise well adapted to the purpose for which it is designed.

With the above and numerous other objects in View as will appear as the description proceeds, the invention resides in certain novel features of construction, and in the combina tion and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing:

Figure 1 is a front elevation of an aeroplane embodying the features of my invention,

Figure 2 is a sectional fragmentary side elevation thereof,

' Figure 3 is a side elevation partly in section of one of the supporting'wheels.

Figure iris an enlarged detail section through the control valve. v

Figure 5 is an enlarged detail vertical section taken substantially on the line 5-5 of Figure 1. v

Figure 6-is a diametric detailed section 45 taken substantially on line 66 of Figure 5, and looking in the direction of the arrows,

and A Figure 7 is an enlarged detailed section 50 through the tail, showing particularly the brake associated with the tail wheels.

generally to R bes tion eferring to the drawing in detail, it will een that the numeral 5 denotes an aeroplane fuselage of any preferred construcwhich has depending from the forward portion thereof a frame structure 6 to which is pivotally engaged a truck comprising a frame F which includes side arms 7 pivotally engaged as at 8 with the bar 10. ties frame 6 and a cross 9 braced in respect to the arm 7 as at Wheels 11 are journaled on the extremiof the brace members 10 at the lower ends peri like against the axle when 1n a free 17 ng in like directions so that balls or the 16 mounted in the recess will wedge the wheels are rotated reverse direction that is the wheels are to rotate in the direction of the arrows in Figure 3 but are prevented from rotating in opposite directions.

arcuate cylinder 18 is mounted on the fuselage as at 19 in any preferred manner so as to be concentric in respect to the pivots 8 and this cylinder is braced in respect to the frame 6 piston 21 a curved by suitable brace structure 20. A is slidable in the cylinder and has rod 22 extending therefrom and slidable through the head 23 at the bottom end of the cylinder and said rod is fixed as at 24- to the cross bar 9.

Butler springs 26 and 27 are located in the ends of the cylinder. A head 28 at the upper end of the cylinder is coupled with a pipe 29 leading from a valve V.- A pipe 30 leads from the valve V.

ottom of the cylinder 18 to the A bufi'er spring 31 is disposed about 'the rod 22 to the outside of the cylinder 18. A

support 33 depending from the tail or rear end of the fuselage has rotatably mounted thereon a tail wheel 34 with a brake drum 35 atta circumjacent the ched thereto. A brake band 36 is disposed drum 35 and controlled by air pipe 40 leading thereto from the valve The valve V comprises a casing 42 into which extends

pipes

29,30 and 40. The pipes 30 and are located at 180 degrees from each other and the pipe 29 is located 90 degrees from the

pipes

30 and 40. 180 degrees from the pipe 29 is an exhaust opening 43 in the casing.

A core 44 is rotatable in the casing receiving air through opening 45 froma pipe 46 leading from an air tank 47. An opening 48 is provided in the core so as to'be registerable with

pipes

29, 30 and 40. An exterior channel 49 is provided in the core for permitting escape of air.

WVith the parts disposed as shown in Figure 4 it will be seen that with the valve V in the position shown in Figure 5, compressed air passes through the pipe 29 to force the piston 21 downwardly and swing the truck frame F rearwardly and since the wheels 11 are prevented from rotating in reverse direction the aeroplane is lifted forwardly and upwardly so as to obtain a quick efficient take off.

The air forced fromthe cylinder escapes through pipe 30, channel 49 and opening 43. The truck frame F is returned to its raised position by turning the core -44 so as to register the opening 48 with the pipe 30.

lVhen landing the brake may be applied on the wheel 34, bringing the opening 48 in registry with the pipe 40, as will be quite apparentand thus landing may be made in a relatively small distance. In landing the shock on the running gear is taken care of by frames27 and 31 as will be quite apparent.

It is thought that the construction, utility and advantages of thisinvention will now be quite apparent to those skilled in this art without a more detailed description thereof. The present embodiment of theinvention has been disclosed in considerable detail merely for the purposes of exemplification since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

H avingthus described my invention, what I claim as new is:.

1. In an aeroplane of theclass described, a wheeled frame, means for rockabl mounting the wheeled frame on the aeropf ane, and means for swinging the frame to kick the aeroplane off the ground, said means compris ing an arcuate cylinder concentric with the axis of therockable frame, a piston slidable in the cylinder. a rod extending from the piston and attached to the frame and compressed air means associated with the cylinder to operate the piston.

2. In an aeroplane of the class described,

a wheeled frame, means for rockably mounting the wheeled frame on the aeroplane, and means for swinging the frame to kick the aeroplane off the ground, said means comprising an arcuate cylinder concentric with the axis of the rockable frame, 'a piston slidable in the cylinder, a rod extending from the piston and attached to the frame and compressed air means associated with the cylinder to operate the piston,-buffer springs located in the ends of the cylinder, a buffer spring on the rod exteriorly of the cylinder.

3. In an aeroplane of the class described, a wheeled frame, means for rockably mounting the wheeled frame on the aeroplane, and means for swinging the frame to kick the aeroplane off the around. said means comprising an arcuate cylinder concentric with the axis of the rockable frame, a piston slidable in the cylinder, a rod extending from the piston and attached to the frame and compressed air means associated with the cylinder to operate the piston, buffer springs located in the ends of the cylinder, a buffer spring on the rod exteriorly of the cylinder, the wheels of the frame having means incorporated therein whereby they are free to rotate forwardly and prevent it from rotating rearwardly.

4. In an aeroplane of the class described, a wheeled frame, means for rockably mounting the wheeled frame on the aeroplane, and means for swinging the frame to kick the aeroplane off the ground, said means comprising an arcuate cylinder concentric with the axis of the rockable frame, a piston slidable in the cylinder, a rod extending from the piston and attached to the frame and compressed air means associated with the cylinder to operate the piston. the wheels of the frame having incorporated therein means allowing them to freely rotate forwardly and preventing them from rotating rearwardly.

.5. An aeroplane of the class described including a fuselage, a wheeled frame, means for rockably mounting the wheeled frame on an aeroplane, and means for swinging the frame to kick the aeroplane off of the ground, said means comprising an arcuate cylinder concentric with the axis of the rockable frame, a cylinder slidable in the piston, a rod extending from the piston and attached to the frame for compressed air means associated with the cylinder to operate the piston, the wheels of the frame having incorporated therein a means allowing them to freely rotate forwardly and preventing them from rotating rearwardly. a depending structure at the tail of the fuselage, a wheel journalled on said structure, a brake associated with said wheels, and means for operating said brake.

In testimony whereof -I aflix my signature.

HARRY B. ORUMBAUGH.