Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1901957 A
Publication typeGrant
Publication dateMar 21, 1933
Filing dateJul 16, 1932
Priority dateJul 16, 1932
Publication numberUS 1901957 A, US 1901957A, US-A-1901957, US1901957 A, US1901957A
InventorsKennet J Girdwood
Original AssigneeKennet J Girdwood
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Revolving parachute
US 1901957 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

March 21, 1933. K. J. GIRDWOOD REVOLVING PARACHUTE Filed July 16, 1932 without damage to itself or to that.

Patented Mar. 21, 1933 UNITED STATES PATENT OFFICE Application filed July 16 This invention relates to a device which I term a revolving parachute, for delivering mail or the like from aeroplanes or other airbe damaged when the device comes to the ground.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawing, and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side view of the device.

Fig. 2 is a fragmentary longitudinal sectional view. I

Fig. 3 is a. transverse sectional view through that part of the device provided with the compartment.

Fig. 4 is a similar view but showing a slight modification.

In the drawing, the numeral 1 designates an elongated substantially straight frame or member having the base 2 of yoke construction so that w en the plates 3 are attached to the sides thereof, a compartment 4 will be formed to receive articles .such as mail or the like; the lower end of this compartment being closed by a door 5.

The top of the member 1 is curved as shown at 1 and likewise the ribs 6 are curved and each has one end solidly united to one edge of member 1. The blade forming part ,7 1s firmly united to member 1 from the curved part 1' to the yoke end 2 and to the ribs 6. When the'device descends through the air the curved ribs cause afriction and this together with the proper center of gravity of the whole device causes it to revolve or rotate to such an extent that it will come to glrpimd cles 1932. Serial 110. 622,954.

within the chamber or compartment 4. It

will. be seen that the device somewhat resembles a seed pod of certain trees.

While the drawing shows the ribs on both sides of the blade forming member, they may, if desired, be placed on but one side and any number of ribs may be used and; of course, the device can be made from any suitable material or various materials as desired. When made of sheet metal the parts would be simply pressed from thin sheet.

Fi 2 and 3 show the side parts of the mem er having plates 3 of any suitable material fastened to the sides of yoke 2 forming the chamber or compartment 4, while Fig. 4 shows the entire member formed with metal portions which are welded or otherwise fastened together. The device somewhat resembles a blade of a propeller and is formed so as to-give the device a rotary movement as it descends through the air. It will of course be understood that the chamber 4 can be divided into several compartments'instead of the one.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction, and in the combination and arrangement of the several parts, provided'that such changes fall within the edge of the appended claims.

' aving thus described my invention, what I claim as new is 1. A parachute of the class described comprising a body somewhat in the form of a single propeller blade and composed of a stem formm member having an enlar ed' base part, a lade member having one e ge fixed to the stem forming member and formed of a sheet of material, curved ribs fastened at one face of the blade member and each' having one end firmly united with the stem forming member, said ribsbe' exposed and acting to stifien the member an to' ether with the proper center of gravity of t e device gives the device a rotating'movement as it descends through the air and a chamber formed in the base of the stem. 4

-" 2. A parachute of the class described comlot a body made somewhat in the form of a single propeller blade and including a stem forming member, a blade formi member formed of a sheet of material and aving 5 one edge fastened to an edge of the' stem member at the longitudinal center of said edge of the stem member, exposed curved ribs fastened in spaced relation to each face of the blade member and each having one end fastened to said ed e of the stem member and a chamber forme in the base of the stem member.

In testimony whereof I afiix my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2682439 *May 29, 1951Jun 29, 1954Joy Kenneth EContainer with resilient support for firearms
US3353295 *Mar 10, 1966Nov 21, 1967Downey John TTransversely curved aerial toy with weighted nose
US3722132 *Feb 8, 1971Mar 27, 1973Seefluth UWing for toy airplanes, particularly helicopters
US4886222 *Jun 13, 1988Dec 12, 1989The United States Of America As Represented By The Administrator Of The National Aeronautics And Space AdministrationAtmospheric autorotating imaging device
WO2009051790A1 *Oct 17, 2008Apr 23, 2009Jayden David HarmanWater craft
U.S. Classification244/138.00A, 446/49, 416/132.00R, D12/319
International ClassificationB64D1/02
Cooperative ClassificationB64D1/02
European ClassificationB64D1/02