US184996A - Improvement in siphon propeller-pumps - Google Patents

Improvement in siphon propeller-pumps Download PDF

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US184996A
US184996A US184996DA US184996A US 184996 A US184996 A US 184996A US 184996D A US184996D A US 184996DA US 184996 A US184996 A US 184996A
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water
tube
propeller
siphon
pumps
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F10/00—Siphons
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2713—Siphons
    • Y10T137/2842—With flow starting, stopping or maintaining means
    • Y10T137/2877—Pump or liquid displacement device for flow passage

Definitions

  • the nature of my invention is to provide means of .dischargin g large portions of wateras from a coft'er-dam-into the river; and consists of a bent tube, in the end ot' which, in the bottom of the coier-dam, is'a screw-propeller or other mechanical device for raising water, and utilizes the atmospheric pressure in sustaining the water in that portion of the tube air-tight above the water-line, thus holding the water in equilibrio in the two equal arms ofthe bent tube.
  • I employ a bent tube containing a screw-propeller, moved by steam or other power, and a jet of compressed air, introduced near the base ofthe discharging-arm.
  • Figure 1 is a side elevation.
  • S. represents the steam-engine or other power employed to rotate the screw-propeller by means of the crank P.
  • A is the screw-propeller.
  • W is the water-line
  • B is the mouth of the tube, a fewinches above the water-line.
  • V is that portion ofthe tube above the waterline, in which, after the air is displaced, the water is sustained by-atmospheric pressure.
  • the progress ofthe water in the tube is that ot' a wave, and it is produced by the same causes that produce the wave, viz., unequal pressure on a body of water.
  • the velocity ot' the tlow in a siphon is in proportion to the height of the source above that of the discharge, and conversely. The greater velocity represents the higher source.
  • the coffer-dam-is full the curved tube above the water-line being full, it is easy to give the water a velocity 'equal to the production of a new virtual water-level at the point L, ten feet above the water-line. If the velocity is sixteen and one-twelfth feet per second vertically, the water from V to ⁇ E will full, the power of the screw and air-jet, with the accumulated force of thevwater in motion, will, when it is nearly empty, raise that low water ten feet, or to the descending virtual level.
  • pipe or tube may be placed in that current
  • the discharge-tube may terminate at E, a point of nearly the same level as the bed of the Colfer-dam, and on the end of thetube, at or near E, there shall be placed a valve, opening outward, to prevent the return ofthe water to the coder-dam.

Description

EMILY E. TASSEY.
SIPHON PRo-PELLER-PUMP.
Patented Dec.5.1876.
UNITED STATES EMILY E. TASSEY', OF PITTSBURG, PENNSYLVANIA.
IMPROVEMENT IN slPHoN'PRoPELLER-PUMPS..
Specification forming part of Letters Patent No. l 84,996, dated December 5, 1876; application filed May 27, 1876.
are suflicientto enable any person skilled in" the art or science to which it most nearly appertains to make and use my said invention without further invention or experiment.
The nature of my invention is to provide means of .dischargin g large portions of wateras from a coft'er-dam-into the river; and consists of a bent tube, in the end ot' which, in the bottom of the coier-dam, is'a screw-propeller or other mechanical device for raising water, and utilizes the atmospheric pressure in sustaining the water in that portion of the tube air-tight above the water-line, thus holding the water in equilibrio in the two equal arms ofthe bent tube. In order to accomplish this purpose, I employ a bent tube containing a screw-propeller, moved by steam or other power, and a jet of compressed air, introduced near the base ofthe discharging-arm.
Referring to the drawings to more fully illustrate and describe my invention, Figure 1 is a side elevation.
Similar letters indicate in each of the figures like parts.
S. represents the steam-engine or other power employed to rotate the screw-propeller by means of the crank P. A is the screw-propeller. W is the water-line B is the mouth of the tube, a fewinches above the water-line. V is that portion ofthe tube above the waterline, in which, after the air is displaced, the water is sustained by-atmospheric pressure.
"Tis a small tube, reaching from the engine to the base of the discharging-arm of the siphon, introducing a jet of compressed air, which forces the water upward in the dischargingarm, both by mechanical pressure and by its natural expansion and ascension; also, according to the law of transmitted pressure, as shown in hydraulic machines, the force ofthe pressure of theair is multiplied by the number of times the area of the small air-tube is contained in the'area ot' the water-tube. -Let the area ot' the air-tube be one inch, and its force live pounds, and the area of the waterline. Then is the water from A toE in equilibrio. Above the water-line it is sustained by atmospheric pressure to any height lessv than thirty feet.
The progress ofthe water in the tube is that ot' a wave, and it is produced by the same causes that produce the wave, viz., unequal pressure on a body of water. the pressure of the screw; second, the jet of air; third, the suction at V; fourth, the gravitation of the water from V to E.
The velocity ot' the tlow in a siphon is in proportion to the height of the source above that of the discharge, and conversely. The greater velocity represents the higher source. At the start, when the coffer-dam-is full, the curved tube above the water-line being full, it is easy to give the water a velocity 'equal to the production of a new virtual water-level at the point L, ten feet above the water-line. If the velocity is sixteen and one-twelfth feet per second vertically, the water from V to`E will full, the power of the screw and air-jet, with the accumulated force of thevwater in motion, will, when it is nearly empty, raise that low water ten feet, or to the descending virtual level. With the last foot of water carried up the tube, the air rushes up to lill the vacuum at V, and the water falls from V to the waterlevel outside; also, when a strong current of water is convenient, the end of the discharge ts motion There are, first,
pipe or tube may be placed in that current,
thus aiding the discharge by the suction of the current; also, the discharge-tube may terminate at E, a point of nearly the same level as the bed of the Colfer-dam, and on the end of thetube, at or near E, there shall be placed a valve, opening outward, to prevent the return ofthe water to the coder-dam.
Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-
In combination with the curved tube, ar-,
ranged as described, the propeller-pump in the receiving end, Vand the air-supply pipe in the discharging end of the tube, as and forY the purpose described. l
In Witness whereof I have hereunto set my hand.
EMILY E. TASSEY.
Witnesses:
A. G. JOHNSTON, JAMES BLAGK.
US184996D Improvement in siphon propeller-pumps Expired - Lifetime US184996A (en)

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