US74089A - hoffman - Google Patents

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US74089A
US74089A US74089DA US74089A US 74089 A US74089 A US 74089A US 74089D A US74089D A US 74089DA US 74089 A US74089 A US 74089A
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wheel
water
buckets
hoffman
passages
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00Machines or engines of reaction type; Parts or details peculiar thereto
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/02Machines or engines of reaction type; Parts or details peculiar thereto with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

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  • Figure 2 is a plan view of a portion of the same.
  • Figure 3' is a side view and partial section of the some portion thereof. 7
  • This invention relates to that class of water-wheels in which it is sought to utilize not only the direct action of the water upon the buckets, but also the reactive force of the water in leavingthe wheel; and the invention consists in buckets of a novel construction arranged, in relation with inclined pussa-ges'atthe upper and lower sides of the wheel, in such manner as to secure the desired, result in a very superior'degreel To enable others to understand the construction and operation of my invention,I willproceed to describe it with reference to the drawings;
  • A indicates the scroll, placed eccentric to and surrounding the wheel, and furnished with the inlet-chute B.
  • the central part, 0, of the wheel is furnished with buckets,.A*, which for the greater portion of their length are tangential, as shown more fully at a in fig. 1, but which at their outer ends are made nearly or quite radial from the vertical shaft B* of the wheel, as represented at b in the same figure.
  • top and bottom disksc d each of which is furnished near its periphery with an annular portion, 0*, projecting upward or downward, as the case may be, and having formed in it inclined passages, e, the said passages of each of the disks c-d communicating, one with the internal space just'm'entioned of each bucket at the innermost extremity of such space.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)

Description

W. J. HOFFMAN. WATER WHEEL.
No. 74,089. Patented Feb. 4, 1868.
Quinn germs gaunt ffitn,
WILLIAM J. HOFFMAN, 0F GROTON FALLS, NEW YORK, ASSIGNOR TO GEORGE v. HOFFMAN.
Letters Patent No. 74,089, dated February 4, 1868.
IMPROVEMEN '1' IN WATER-WHEELS.
TO ALL WHOM IT MAY CONCERN:
Be it known that I, WILLIAM J. HorFMAN, of Croton Falls, in the county of Westohester, and State of New York, have invented a new and useful Improvement in Water-Wheels; and I do hereby declare that the fol lowing is afull, clear, and exact description of the same, reference being bad to the accompanying drawings, making a portion of this specification, in which- Figure 1 is a horizontal section of a water-wheel constructed according to my invention.
Figure 2 is a plan view of a portion of the same.
Figure 3'is a side view and partial section of the some portion thereof. 7
Similar letters of reference indicate corresponding parts in all the figures.
This invention relates to that class of water-wheels in which it is sought to utilize not only the direct action of the water upon the buckets, but also the reactive force of the water in leavingthe wheel; and the invention consists in buckets of a novel construction arranged, in relation with inclined pussa-ges'atthe upper and lower sides of the wheel, in such manner as to secure the desired, result in a very superior'degreel To enable others to understand the construction and operation of my invention,I willproceed to describe it with reference to the drawings;
A indicates the scroll, placed eccentric to and surrounding the wheel, and furnished with the inlet-chute B. The central part, 0, of the wheel is furnished with buckets,.A*, which for the greater portion of their length are tangential, as shown more fully at a in fig. 1, but which at their outer ends are made nearly or quite radial from the vertical shaft B* of the wheel, as represented at b in the same figure. The upper and lower sides of the spaces between the buckets O are closed by the top and bottom disksc d, each of which is furnished near its periphery with an annular portion, 0*, projecting upward or downward, as the case may be, and having formed in it inclined passages, e, the said passages of each of the disks c-d communicating, one with the internal space just'm'entioned of each bucket at the innermost extremity of such space. I I V The water-being admitted to the wheel throughtbe chute B, strikes first the radial outer portions 6 of the buckets, and acts directly thereon to turn or propel the wheel, after which, the water passing farther around within the scroll A, acts upon the tangential portions a of the buckets with what may he termed a glancing action, exerting a still further force upon the wheel, and then,as-it approaches the. narrower portion of'the scroll, passes outward into a trough, the inclined passages e acting upon the inclined surfaces at the upper side of those passages at the top of the-wheel, and the lower sides of those at the bottom thereof, in a manner similar to the action exerted upon'the tangential portions a of the buckets, as just set forth, and finally, in leaving or e passing out of the said passages, the water, by its reaction against the surrounding water oragainst the atmosphere, exerts a reactive force to still further rotate the wheel, so that by these means a very large proportion of the entire or theoretical power of the water is utilized.
What I claim as my invention, and'desire to secure by Letters Patent, is- The tangential buckets A*, constructed with radial or nearly radial end-portions, b, and arrangedwith reference to the inclined passages c near the periphery of the wheel, substantially as and for the purpose specified.
W. J. HOFFMAN.
Witnesses:
J. W. Coouss, A. Le Chane.
US74089D hoffman Expired - Lifetime US74089A (en)

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