US1362070A - Aeroplane - Google Patents

Description

A. AHLBRECHT.

AEROPLANE.

APPLICATION HLED MAY 15. 1920.

Patented Dec. 14, 1920.

UNITED STATES AUGUST AHLBRECHT, OF PITTSBURGH, PENNSYLVANIA.

AEROPLANE.

Specification of Letters Patent.

Patented Dec. 14, 1920.

Application led May 15, 1920. Serial No. 381,726.

To all whom it may concern:

Be it known that I, AUGUST AHLnncrrr, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Aeroplanes, of which the following is a specilication.

This invention relates to aeroplanes, more particularly to the construction of bi-planes of the tvpe described in my application for Letters Patent filed March 27th, 1919, Serial No. 285,536, and besides embodying the objects and advantages as set forth in connection with the construction embodied in said application, has for its further object to improve the balancing planes whereby tilting of the aerial vessel will be reduced to a minimum especially while descending.

Further objects of the invention are to provide an aerial vessel of the character stated, in a manner as hereinafter set forth which is simple in its construction and arrangement, strong, durable and eficient in its use, readily set up, and comparatively inexpensive to manufacture.

To the accomplishment of these and such other objects as may hereinafter appear, the invention consists of the novel construction, combination and arrangement of parts herein specifically described and illustrated in the accompanying drawing wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawing forming a portion of this specification and wherein like numerals of reference designate corresponding parts throughout the several views:

Figure 1 is a perspective view of aeroplane planes in accordance with this invention. Fig. 2 is a side view thereof, and Fig. 3 a view on line III-III, Fig. 2.

Referring to the drawing in detail 1 denotes an upper sustaining plane and 2 a lower sustaining plane, the latter being of less length than the former. The end portions 3 of the lower plane 2 extend upwardly at an inclination and are provided with an opening 4. The end portions 3 are disposed at opposite inclinations relative to each other. Suitable framing structures are provided for the planes and frame element-s 5 are also provided for maintaining the planes spaced from each other, as well as supporting and bracing them. The upper plane 1 extends beyond the end portions 3 of the lower plane 2.

Interposed between the planes 1 and 2, centrally thereof and spaced from each of said planes, is a substantially V-shaped balancing plane 6 having each of its wings formed with an opening 7. The angular disposition of the wings of the balancing plane 6 is identical to the angular disposition of respective end portions 3 of the lower sustaining plane 2. Each of the openings of the balancing plane 6 is in alinement with an opening i in an end portion 3 of the lower plane 2.

The plane 1, centrally thereof, has an opening from which extends upwardly a vertical sleeve 8, and a pair of openings from each of which extends a sleeve 9. The sleeves 9 are of less diameter and height than the sleeve 8 and are arranged at respective sides of the latter over the balancing plane Y6. The openings in the plane 1 in connection with the sleeves 8 and 9 tend to prevent tilting as they permit of the passage of induced currents of air, and are associated with the openings 4: and 7 which also provide for the passage of currents of air.

What I claim is:

1. An aeroplane comprising a pair of sustaining planes, one arranged over the other, a balancing plane interposed between and spaced from the sustaining planes, said balancing plane being V-shaped and having each of its wings provided with an opening, one of said sustaining planes having opene ings arranged over the balancing plane, and the other of said sustaining planes having inclined end portions each having an opening.

2. An aeroplane comprising an upper and a lower sustaining plane, said upper plane having a series of openings and sleeves extending from the openings, a balancing plane arranged between the sustaining planes and provided with openings, said lower plane having inclined end portions each provided with an opening.

3. In an aeroplane, an upper and a lower sustaining plane, said upper plane having a series of openings and sleeves extending from the openings, a V-shaped balancing plane arranged between the sustaining planes and provided with openings, said lower plane having inclined end portions each provided with an opening, and said 10 upper plane extending beyond the'end portion of the said lower plane. i

In testimony whereof I aiiix mv signature.

AUGUST AHLB'RECHT.

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