US1899646A

US1899646A - Propeller

Info

Publication number: US1899646A
Application number: US627277A
Authority: US
Inventors: Soutier Alfred
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-08-02
Filing date: 1932-08-02
Publication date: 1933-02-28
Anticipated expiration: 1950-02-28

Description

Feb. 28, 1933. A sou- 1,899,646

PROPELLER Filed Aug. 2, 1932 l 2 Sheets-Sheet 1 Inventor.

Feb. 28, 1933. I A. SOUTIER 1,899,646

PROPELLEF Filed Aug. 2, 1932 2 Sheets-Sheet 2 N i B 2 I I5 Inventor Patented Feb. 28, 1933' UNITED, STATES ,ALFRED SOUTIEB, OF QUINCY, MASSACHUSETTS;

PBOPELLER Application filed August 2, 1932; Serial 1%-627377.

This invention relates to a propeller which is intended for general use and has for one of its important objects to provide, in a manner as hereinafter set forth, a propeller em- 5 bodying a novel construction, combinat1on and arrangement of parts through the medlum of which the slip stream will be thrown rearwardly and outwardly around the fuselage of the aeroplane, thereby materially lowering head resistance. v

Another important object of the invention is to provide a propeller of the aforementioned character including novel means for detachably mounting the blades on the propeller shaft.

Another important object of the invention is to provide an aeroplane propeller including a novel combination and arrangement of blades through the medium of which maximum efficiency will be had.

Other objects of the invention are to provide a propeller of the character described which will be simple in construction, strong, durable, reliable in use and which may be 5 manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure l is a view in side elevation, showing a propeller constructed in accordance with the present invention.

Figure 2 is a view in front elevation thereof.

Figure 3 is a View in side elevation showing the propeller mounted on an aeroplane.

Figure 4 is a view in vertical transverse section, taken substantially on the line 44 of Figure 1.

Referring now to the drawings in detail, it will be seen that the reference numeral 1 designates a conventional aeroplane from the nose portion 2 of which a propeller shaft 3 projects. On the forward end'portion of the shaft 3 is a circular head 4 having notches or recesses 5 in diametrically opposite sides verging, outwardly curved blades. 6. The

peller, constitutes means for bracing the thereof. Th'ehead 4 constitutes what may termedt-hehub of; the propeller. v Mounted on the headl4 are forwardly diinner end'soflthe blades 6' are provided with shanks-7 which are engaged in the notches or recesses 5 of the head 4. At their free ends the shanks 7 terminate in inturned lips 8 which are engaged with the rear face of the head 4. A retaining ring 9 is mounted on the head 4 for securing the shanks 7 in the notches or recesses 5. The retaining ring 9 is secured in position on the head 4through the medium of a set screw 10.

On the rear sides and on the outer portions of the blades 6 are reversely curved fins 11. While the fins 11 are shown integral with the blades 6, itwill be understood that said fins may be separate from the blades and secured thereon in any suitable manner.

Extending between the forward portions of the blades 6 and secured, at its ends, to said blades, as at 12', is a substantially spirally twisted strut which is designated generally by the reference numeral 13. The strut l3 constitutes a pair of integral propeller blades 14 which are connected by a reduced intermediate portion 15. As will be apparent, the strut 13 in addition to functioning as a problades 6.

It is believed that the many advantages of a propeller constructed in accordance with the present inventionwill be readily understood, and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resortedto which will fall within the scope of the invention as claimed.

WVhat is claimed is:

1. A propeller comprising a pair of blades, and means for mounting the blades on a propeller shaft, said means including a head fixed on the shaft and having notches in diametrically opposite sides thereof, shanks on the inner ends of the blades engaged in the notches, inturned lips on the free ends of the shanks engaged with the head, a ring encir:

2 rename;

cling the head and shanks for retaining said shanks in the notches, and means for securing the ring on the head. 2. A propeller comprising a hub, a pair 7 of diverging, outwardly curved blades mounted on the hub, substantially reversely curved Jim on the rear sides of the blades, and a substantially spirally twisted strut extending between the outer portions of the blades and connected thereto.

3. In combination-with ashaft, a propeller mounted on said shaft, said propeller in eluding a pair of diverging blades mounted on one end portion of the shaft and project ing beyond said one end of the shaft, and a spirally twisted strut extending between outer portions of the blades and connected at its ends thereto, said strut being spaced.

from said one end of the shaft. 0 In testimony whereof I aflix my signature.

ALFRED 'SOUTIER.