US332710A - Edwaed h - Google Patents

Edwaed h Download PDF

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Publication number
US332710A
US332710A US332710DA US332710A US 332710 A US332710 A US 332710A US 332710D A US332710D A US 332710DA US 332710 A US332710 A US 332710A
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Prior art keywords
blade
shaft
screw
opening
propeller
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Expired - Lifetime
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H2001/122—Single or multiple threaded helicoidal screws, or the like, comprising foils extending over a substantial angle; Archimedean screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/25—Geometry three-dimensional helical

Definitions

  • My invention consists in a screw-propeller, the blade of which is composed ofa body and two wings, and which extends entirely once around the shaft on which it is mounted, and adapted and intended to be wholly submerged, and having an elliptical opening in the body of the blade in the portion thereof immediately adjacent to the shaft, said opening being concentric in curve to the shaft and the outer rim of the blade-body, and extending into the wings of the blade on each side to about onethird the length of the wings from the axial line of the shaft to the edge or extremity of thewings,as hereinafter described and claimed.
  • A is the shaft,and B is the propeller-screw, composed of the body and wings shown, and forming a continuous blade extending once entirely round the shaftwith the appropriate pitch.
  • the said screw is formed on or at taehed directly to the shaft.
  • the opening a In the body of the blade is formed the opening a, the said opening being elliptical in form or outline, and having a curve longitudinally, which is coincident to the circle or curve of the shaft and that of the rim of the blade.
  • the opening a is furthermore located in that portion of the blade which is immediately adjacent to the shaft, but having a portion of the blade continuous around and in contact with the shaft.
  • the said opening a extends into each wing of the blade to about one-third of the (X0 model.)
  • the screw propeller thus constructed is adapted and intended to be wholly submerged when it is operated as a propeller, and the full advantages of its peculiar construction are only obtained when it is thus submerged.
  • a screw-propeller adapted to be wholly submerged in operation, consisting ofan axial shaft, A,and a blade, B, extending helically entirely once around the said shaft, and having the elliptical opening a in that portion of the body of the blade which is immediately adjacent to the shaft, and extending, in a curve which is concentric to that of the shaft and the bladerii'n, into each wing of the blade about one third ofthe distance from the axial line of the shaft to the extremity of the wing, as and for the purpose specified.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

(No Model.)
B. H. HALL.
v SCREW PROPBLLER. v No. 332,710. Patented Dec. 22, 1885.
Wi'fizeaes: J52 venior g &
N. PETERS. Phaloliflwgraphar, Washington, By C.
EDWVARD H. HALL, OF BROOKLYN, NEW YORK.
SCREW-PROPELLER.
SEECIPICATIQN forming part of Letters Patent No. 332,710, dated December 22, 1885.
Application filed DecemherlS), 1884. Serial X0. 150,722.
To all whom it may concern.-
Be it known that I, EDWARD H. HALL, of the city ofBrooklyn, in the county of Kings and State of New York, and a citizen of the United States of America, have invented a new and useful Improvement in Screw-Propellers, of which the following is a specification, reference being had to the accompanying drawings,forming part of the same,in which Figure 1 is a side view of a screw propeller containing my invention, and Fig. 2 is an end view of the same.
My invention consists in a screw-propeller, the blade of which is composed ofa body and two wings, and which extends entirely once around the shaft on which it is mounted, and adapted and intended to be wholly submerged, and having an elliptical opening in the body of the blade in the portion thereof immediately adjacent to the shaft, said opening being concentric in curve to the shaft and the outer rim of the blade-body, and extending into the wings of the blade on each side to about onethird the length of the wings from the axial line of the shaft to the edge or extremity of thewings,as hereinafter described and claimed.
A is the shaft,and B is the propeller-screw, composed of the body and wings shown, and forming a continuous blade extending once entirely round the shaftwith the appropriate pitch. The said screw is formed on or at taehed directly to the shaft. In the body of the blade is formed the opening a, the said opening being elliptical in form or outline, and having a curve longitudinally, which is coincident to the circle or curve of the shaft and that of the rim of the blade. The opening a is furthermore located in that portion of the blade which is immediately adjacent to the shaft, but having a portion of the blade continuous around and in contact with the shaft. The said opening a extends into each wing of the blade to about one-third of the (X0 model.)
length ofthe wing, measuring from the axial line of the shaft to the rim or extremity of the wing, as shown in Fig 2.
The screw propeller thus constructed is adapted and intended to be wholly submerged when it is operated as a propeller, and the full advantages of its peculiar construction are only obtained when it is thus submerged.
I am aware that screw-propellers have been heretofore constructed with openings in their blades, and hence I do not claim such form and construction, broadly.
I intend to limit my claim hereunder to a screw-propeller composed of a single blade extending entirely once around the shaft, and adapted and arranged to be operated when wholly submerged, having the opening a in the body and wings of the blade, and located and formed as herein particularly set forth,
vwhereby in the operation of a blade of this specific description the dead-Water will be effectively cleared from the blade through the said opening, and the lifting of such dcad-water and consequent loss of propellingpower be avoided.
\Vhat I claim as my invention, and desire to secure by Letters Patent, is
A screw-propeller adapted to be wholly submerged in operation, consisting ofan axial shaft, A,and a blade, B, extending helically entirely once around the said shaft, and having the elliptical opening a in that portion of the body of the blade which is immediately adjacent to the shaft, and extending, in a curve which is concentric to that of the shaft and the bladerii'n, into each wing of the blade about one third ofthe distance from the axial line of the shaft to the extremity of the wing, as and for the purpose specified.
. EDWVARD H. HALL.
Witnesses:
A. G. N. VERMILYA, DAVID P. HERRICK.
US332710D Edwaed h Expired - Lifetime US332710A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070151614A1 (en) * 2005-12-29 2007-07-05 Dayton Robert A Pressure regulating valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070151614A1 (en) * 2005-12-29 2007-07-05 Dayton Robert A Pressure regulating valve

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