US467323A - Screw propeller - Google Patents

Screw propeller Download PDF

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Publication number
US467323A
US467323A US467323DA US467323A US 467323 A US467323 A US 467323A US 467323D A US467323D A US 467323DA US 467323 A US467323 A US 467323A
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Prior art keywords
boss
blade
arm
screw
face
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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
    • B63H1/14—Propellers
    • B63H1/26—Blades
    • B63H1/265—Blades each blade being constituted by a surface enclosing an empty space, e.g. forming a closed loop
    • 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

  • This invention relates to improvements in the screw-propeller formed with flat looped blades helically disposed and is designed with the object of obtaining greater speed there- I 5 from or power of driving the vessel faster.
  • each blade instead of making each blade symmetrical with the two arms A and B thereof in the same relative position to the boss C, I make 0 the front arm A of the .flat loop with the striking-edge a approximately straight and in a plane approximately tangential to the boss or hub C at the point Where it touches it, and in side elevation this striking-edge a is practically parallel to the face of the hub C, so as not to overhang it at all; and I make the back arm B of the looped blade with the rear edge 17 approximately radial to the center of the boss or hub C and, as seen in side elevation, overhanging or extending beyond the vertical face of the boss to a considerable degree, the pitch of the flat part of the blade being increased toward b.
  • the front arm A of the looped blade is thus made more erect than the back or following arm B and a better grip of the water is obtained at the point of contact with the blade and I consider that a considerable gain in speed will result.
  • a screw-propeller blade of the form of a flat severed loop constructed with the striking-edge of the front or forward arm of the loop approximately tangential to the hub or boss at its point of contact therewith and parallel to the face of the boss and with the rear edge of the other arm of the loop approximately radial to the center of the boss and inclined at a considerable degree to and overhanging its vertical face, substantially as described and shown.
  • a flat-l0oped screw-propeller blade provided at one side with an arm tangential to the boss and parallel with the face thereof and at the other'side with an arm radial with the center of the boss and inclined to the face thereof and with the top vertical fiat surface increasing in pitch from the front to the back, substantially as described.

Description

(No Model.) 2-Sheets--Sheet 1.
G. MYERS.
SCREW PROPELLER.
No. 467,323. Patented Jan. 19, 1892.
WITNESSES I Fl #1 INVENTOK I/-, @M. (0W. 3: 4
N KRIS PEYIRB cm, PNWLITMm, msmum'ou u c I ttys.
(No Model.) 2 SheetsSheet 2. 0. MYERS. SCREW PROPELLER.
N0. 467,323. Patented Jan. 19, 1892.
WITNESSES CHARLES MYERS,
OF MANCHESTER, ENGLAND, ASSIGNOR OF ONE-HALF TO MATTHEW WELLS, OF SAME PLACE.
SCREW-PROPELLER.
SPECIFICATION forming part of Letters Patent N 0. 467,323, dated January 19, 1892.
Application filed July 14, 1891. Serial No. 399,449- (No model.) Patented in England January 13, 1891, No- 670.
T at whom it may concern:
Be it known that I, CHARLES MYERS, designer, a subject of the Queen of Great Britain, residing at Manchester, in the county of Lancaster, England, have invented certain new and useful Improvements in Screw-Propellers, (for which I have obtained Letters Patent in Great Britain under N0. 670, dated January 13, 1891,) of which the following is a to specification.
This invention relates to improvements in the screw-propeller formed with flat looped blades helically disposed and is designed with the object of obtaining greater speed there- I 5 from or power of driving the vessel faster.
It consists, essentially, in constructing the front or forward arm of each looped blade with the strikin g-edge approximately straight and tangential to the boss at the point of contact with it and in a plane parallel or approximately parallel with the face of the boss, and the back arm of each looped blade with the rear edge radial or approximately radial to the center of the boss and inclined to the 2 5 face of the boss, so as to overhang or extend to a considerable degree beyond it, the pitch of the screw being increased toward the back, so as to be greater than that nearer to the front or forward edge. It will be fully described with reference to the accompanying drawings, in wl1ich Figure l is an elevation; Fig. 2, a plan; Fig. 3, a sectional elevation; Fig. 4, an expanded view of one blade, and Fig. 5 an ele- 3 5 vation of a single blade with base or disk for connecting it to the boss.
Instead of making each blade symmetrical with the two arms A and B thereof in the same relative position to the boss C, I make 0 the front arm A of the .flat loop with the striking-edge a approximately straight and in a plane approximately tangential to the boss or hub C at the point Where it touches it, and in side elevation this striking-edge a is practically parallel to the face of the hub C, so as not to overhang it at all; and I make the back arm B of the looped blade with the rear edge 17 approximately radial to the center of the boss or hub C and, as seen in side elevation, overhanging or extending beyond the vertical face of the boss to a considerable degree, the pitch of the flat part of the blade being increased toward b. The front arm A of the looped blade is thus made more erect than the back or following arm B and a better grip of the water is obtained at the point of contact with the blade and I consider that a considerable gain in speed will result.
That I claim as my invention, and desire to protect by Letters Patent, is
1. A screw-propeller blade of the form of a flat severed loop, constructed with the striking-edge of the front or forward arm of the loop approximately tangential to the hub or boss at its point of contact therewith and parallel to the face of the boss and with the rear edge of the other arm of the loop approximately radial to the center of the boss and inclined at a considerable degree to and overhanging its vertical face, substantially as described and shown.
2. A flat-l0oped screw-propeller blade provided at one side with an arm tangential to the boss and parallel with the face thereof and at the other'side with an arm radial with the center of the boss and inclined to the face thereof and with the top vertical fiat surface increasing in pitch from the front to the back, substantially as described.
In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 3d day of July, 1891.
CHARLES MYERS.
US467323D Screw propeller Expired - Lifetime US467323A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180424A (en) * 1963-03-25 1965-04-27 Constantine A Serrindes Propeller structure
WO2014130134A2 (en) 2012-12-10 2014-08-28 Sharrow Gregory Charles Propeller
AU2017268808B2 (en) * 2016-05-27 2019-02-14 Sharrow Engineering Llc Propeller
US11273892B2 (en) 2012-12-10 2022-03-15 Sharrow Engineering Llc Propeller

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180424A (en) * 1963-03-25 1965-04-27 Constantine A Serrindes Propeller structure
US11273892B2 (en) 2012-12-10 2022-03-15 Sharrow Engineering Llc Propeller
WO2014130134A2 (en) 2012-12-10 2014-08-28 Sharrow Gregory Charles Propeller
CN104854310A (en) * 2012-12-10 2015-08-19 夏洛工程有限公司 Propeller
JP2016507410A (en) * 2012-12-10 2016-03-10 シャロウ エンジニアリング リミティド ライアビリティ カンパニー propeller
EP2941539A4 (en) * 2012-12-10 2016-09-07 Sharrow Engineering Llc Propeller
JP2016222242A (en) * 2012-12-10 2016-12-28 シャロウ エンジニアリング リミティド ライアビリティ カンパニー propeller
EP3431387A1 (en) * 2012-12-10 2019-01-23 Sharrow Engineering LLC Propeller
US11603184B2 (en) 2012-12-10 2023-03-14 Sharrow Engineering Llc Propeller
AU2017268808C1 (en) * 2016-05-27 2020-02-13 Sharrow Engineering Llc Propeller
CN112758290A (en) * 2016-05-27 2021-05-07 夏洛工程有限公司 Propeller
AU2019203301B2 (en) * 2016-05-27 2021-03-04 Sharrow Engineering Llc Propeller
AU2021203673B2 (en) * 2016-05-27 2023-02-23 Sharrow Engineering Llc Propeller
AU2017268808B2 (en) * 2016-05-27 2019-02-14 Sharrow Engineering Llc Propeller
JP7315647B2 (en) 2016-05-27 2023-07-26 シャロウ エンジニアリング リミティド ライアビリティ カンパニー propeller
CN112758290B (en) * 2016-05-27 2023-11-07 夏洛工程有限公司 Propelling device

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