US1668052A

US1668052A - Helicopter

Info

Publication number: US1668052A
Application number: US192131A
Authority: US
Inventors: Davis Claud
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-05-17
Filing date: 1927-05-17
Publication date: 1928-05-01
Anticipated expiration: 1945-05-01

Description

My 1 C. DAVIS HELICOPTER Filed m 17', 1927 the advantage that accurate observations- Patented May 1," 1 928.

UNITED STATES- PATENT oF-FIca.

HELICOPTER.

Application M May 17, 1921. Serial No. 192,131.

' My invention relates to a flying machine of the helicopter type and it has for its object to provide a device of this class, which, after rising perpendicularly from the ground to the desired height, can be made to travel in either-of two horizontal directions without reversing the motor.

' One'advantage of my invention resides in the fact that the flying machine can be stopped suddenly in .mid "air at any elevation and maintained stationary. This has maybe made or photographs taken or surveys made from such position.

Another advantage possessed by my invention is that instead ofturning on a long radius when changingthe direction offlight, this machine can be made to reverse its flight so as to run in exactly opposite direc tion to that in which it has been proceeding andat a moments notice.

Another'advantage of my invention is that parachute .and that landing can be made very safely by slowing down the engine,

when the flying machine will descend at a low rate of speed almost perpendicularly and onto any kind of ground, rough or smooth, and without having to taxi.

In the accompanying drawing one embodiment of the invention is illustrated, and

Figure 1 shows avertical, longitudinal section of the device in position of rising from'the ground; and,

Figure 2 a side elevation. of the flying machine as arranged for horizontal flight.

In the drawing reference numeral (10) represents the main frame workca-rrying a central housing (11) for the motor (12). This housinglforms preferably a part of the fuselage, which may be of any suitable construction, but is not shown on the drawing nor has the necessary accommodation for the aviators been indicated.

A driving shaft (13) extends forwardly and rearwardly from the motor (12) and'is supported in bearings (14) carried on eye bolts (15) from the main frame (10). On the forward and rearward end of the driving shaft (13) are secured propellers (16, 17) which-are, however, oppositely pitched so as todraw air inwardly in the direction of the motor (12). The propellers are inclosed in tubes (18, 19) respectively, which are coaxial with the shaft (13) and are joined together" by upwardly inclined branches (20, 21) so as to form-an'inverted Y with a central vertical drum (22). I

On the housing or any suitable part of the main frame is erected a central mast or post (23) which at its upper end carries an inverted cone (24) made of any suitable light and strong material. Upon this cone rests .an aerofoil (25), preferably in the shape of an umbrella or parachute, the outer edges (26) of which extend fully over the outer edges of the air tubes. (18, 19). Ribs (27) strengthen and keep the aerofoil stretched, while. cords or wire braces (28) connected the ends of the eye bolts (15) and other eyes (29) on the frame or mainhous ing.

Collapsible air guides in the shape of elbow joints (30, 31) one atthe end of each tube (18 and 19) are provided to direct the incoming air either in vertical or horizontal direction. A stout hinge member (32, 33)- secured to the respective tubes (18 and 19) and each actuated by a rope (34.- and 35) respectively enables the aviator to maintain the air guidesin open or closed'position.

Theropes run through eyes or pulleys (36.. 1

37) secured at the upper, open end of the drum 22) where. the latter is braced by bands (38) to the mast or post (23). Suitable securing means (39, 40) for the ends of the ropes.

The steering device has been omitted, as anv conventional type thereof may be used. When the aviator is ready to fly he arranges the collapsible air inlets (30. 31) by means of the ropes (34, 35) as indicated in Figure 1. that is to say, with their openings upward. He next starts the motor (12), thereby causing the shaft (13) with the propellers (16, 17) to'revolve and draw in air through the air inlets (30. 31) and tubes (18, 19). This air will then be forced upwards through the branches (20, 21) and the air drum (22) against the inverted cone and under the aerofoil (25) as indicated by arrows (X).

The air pressure will then exert a lifting action against the aerofoil thus raising'the flying machine substantially straight up. from the ground when the desired elevation has been attained. the aviator releases one of the ropes (34), for instance, when the inlet elbow (30) .collapses, permitting air to are provided be drawniin horizontally in the direction of the inlet elbow, while the exhaust the motory wh'en the' device will make a substantially" vertical; descent and without the-aid any la'ndin gear. 4

"While the referred embodiment of my in'veritionhas" een described in detail, it will hex-understood that I do not wish to be limited to the'particular construction set forth; since various changes in thek'form and arrangement ofparts and: in theidetalls of construction may be resorted towlthout dea parting from the spiritgandscope of the invention' or destroying any of the advantages contained in the, same. 1

1. In a flying machine of the class described having a' frame, amotor and an aerofoil supported on the frame; a double ended shaft actuated by the motor, a propeller on each endof said shaftand means or directing the-aircurrent, set in .motion by saidiprlopel-lers, against the aerofoil in order'tograise; the flyin machine said means comprising substantially horizontal tubular inclosures for thepro ellers and,.upwardly directed" extensions o said inclosuresand elements at theintake ends of said tubular inclosures adapted tol vary the direction of lIlCOIDlng air. 4

2.-In:a flying of the-class described having aframe, a motor and an aerofoil. supported onwthe' frame; a double ended shaft actuated. by the motor, a propeller on: each end,'of;-,Is aid shaftand means ordirecting the airffig rrent, set in motion by saidpropelle fi aagainst the aerofoil in order to raise the flyingniachine; said means comprising substantially, horizontal tubular inclosui'esfor the propellers and upwardly directed extensions of said. 'nclosures and.

elements at-the intakeyends of said tubular inclosures adaptedto vary the direction. of incom ng a r; said, elements comprising collapsible. ,elbows.

3. In 'aiflying maihine of. the class described having a frame, a"- motor and anaerofoil supported on the frame; a double ended shaft actuated by the motor, a proeller on each end of said shaft and means I or directing the air current, set in motion by said propellers, against the aerofoil in order. to raise the flyin machine; said means comprising substantially horizontal tubular inclosures for the propellers directed extensions of said inclosures and elements at the intake ends of said-tubular inclosures adapted to vary the direction of incoming air; said elements comprising 001- lapsible elbows and operating members for the elbows. 3

4. In a flying machine of the class described having a frame, a motor and an aerofoil supported on the frame; a double ended shaft actuated by the motor, a propeller on each end of saidshaft and means for directing the air current, set in motion by said -propellers, against the aerofoil in order to raise the flying machine; said means .comprisin tubular inclosures for the propelleis and upwardly directed extensions of said .inclosure's, said inclosures and their extensions having the shape of" an inverted letter Y. v '5. In a flying machine of the.class described having a frame, a motor and an aerofoil supported on the frame; a double ended shaft actuated by the motor, a prollerv on each end of said shaft and means h or directing the air current, setin motion by said propellers, against the aerofoil in order to raise the flying machine; said means comprising tubular inclosures for the pro- .pellers and upwardly directed extensions of said inclosures, said inclosures and their extensionshaving the shape of an inverted comprising substantia y horizontal tubular ,inc'losures for the propellers and upwardly directed extensions of said inclosures and element's at the intake. ends of said tubular i-nclosures adapted to vary the direction of incoming air; said elements comprising colapsible elbows' and operating. members for Lthe elbows, said inclosures and their-extensions having theshape of an inverted let- 'terY I In witness whereof, I, have hereunto set my hand at walshijngton, District of flolum-c bia, th's ninthfdayjpf May','A. D. nineteen hundred twenty-seven.

CLAUD DAVIS. v