US158734A - Improvement in screw-propellers - Google Patents

Improvement in screw-propellers Download PDF

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Publication number
US158734A
US158734A US158734DA US158734A US 158734 A US158734 A US 158734A US 158734D A US158734D A US 158734DA US 158734 A US158734 A US 158734A
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Prior art keywords
screw
propellers
blades
improvement
shaft
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Expired - Lifetime
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/07—Parts or details, e.g. mixing tools, whipping tools
    • A47J43/0705—Parts or details, e.g. mixing tools, whipping tools for machines with tools driven from the upper side
    • A47J43/0711—Parts or details, e.g. mixing tools, whipping tools for machines with tools driven from the upper side mixing, whipping or cutting tools
    • 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
    • F05B2210/00—Working fluid
    • F05B2210/16—Air or water being indistinctly used as working fluid, i.e. the machine can work equally with air or water without any modification

Definitions

  • the invention consists of a screwspropeller with semi-elliptic or otherwise bent and twisted blades attached atone or both-ends of shaft,
  • A represents the propeller-shaft, to which are attached, at oneor both ends, three or more curved and twisted blades, B.
  • A represents the propeller-shaft, to which are attached, at oneor both ends, three or more curved and twisted blades, B.
  • the twisted blades B may be curved in semi-elliptic, oval, or roundshape, as found most effective by experiment.
  • auxiliary wings or blades 0 of suitable, size, curve, and twist, which are firmly bolted undersuitable inclination near the middle and rear parts to the main blades, for the purpose of increasing the propelling surface without causing the dragging or vibrating of any parts.
  • the propeller is made of rolled-metal plates, each auxiliary and main blade being separately attached, so that any part may be repa-red without interfering with the other parts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

E. 3. P0 RTER. Screw- Propellers.
P-atented Jan. '12, 1,875.
WHNE SSES 06M.
ATTORNEYS.
-U1\TITED STATES ELBERT B. PORTER,
PATENT OFFICE.
OF HAVANA, GUBA'.
IMPROVEMENT IN SCREW-PROPELLERS.
Specification forming part of Letters Patent No. 158,734, dated January 12, 1875; application filed October 31, 1874.
'To all whom it may concern Be it known that I, ELBER'I B. PORTER, of
' -Havana, in Cuba, have invented a new and propeller, which may be constructed at less cost, more -conveniently and cheaply repaired when broken or injured, and capable ofproducing a considerable increase of speed.
The invention consists of a screwspropeller with semi-elliptic or otherwise bent and twisted blades attached atone or both-ends of shaft,
and provided with interior and exterior auxiliary wings of sufficient size and twist.-
In the drawing, A represents the propeller-shaft, to which are attached, at oneor both ends, three or more curved and twisted blades, B. For lighter vessels it may be sufficient to attach one end of the screw-blades merely to the shaft, the other ends being rigidly connected, but for larger vessels and heavier workitwill be preferable to extend the shaft centrally to the rear end of the blades and bolt them firmly thereto. The twisted blades B may be curved in semi-elliptic, oval, or roundshape, as found most effective by experiment. They are furthermore provided with interior and exterior auxiliary wings or blades 0 of suitable, size, curve, and twist, which are firmly bolted undersuitable inclination near the middle and rear parts to the main blades, for the purpose of increasing the propelling surface without causing the dragging or vibrating of any parts.
The propeller is made of rolled-metal plates, each auxiliary and main blade being separately attached, so that any part may be repa-red without interfering with the other parts.
Having thus described my invention, I claim as new-and desire to secure' by Letters Patent A screw-propeller constructed of three or more curved and twistedblades attached at one or both ends to the shaft, and provided with projecting interior and exterior auxiliary blades or wings, substantially in the manner and for the purpose set forth.
ELBERT B. PORTER. Witnesses:
HENRY O. HALL, U. S. Consul- General, L. V. SCHMIDT, J. W. SANGER.
US158734D Improvement in screw-propellers Expired - Lifetime US158734A (en)

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US158734A true US158734A (en) 1875-01-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070175116A1 (en) * 2003-12-30 2007-08-02 Gary Borgerding Water runoff deflector for a vehicle at a loading dock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070175116A1 (en) * 2003-12-30 2007-08-02 Gary Borgerding Water runoff deflector for a vehicle at a loading dock

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