US147870A - Improvement in supplying air to air-chambers - Google Patents
Improvement in supplying air to air-chambers Download PDFInfo
- Publication number
- US147870A US147870A US147870DA US147870A US 147870 A US147870 A US 147870A US 147870D A US147870D A US 147870DA US 147870 A US147870 A US 147870A
- Authority
- US
- United States
- Prior art keywords
- air
- chambers
- improvement
- chamber
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/141—Intermediate liquid piston between the driving piston and the pumped liquid
Definitions
- THoMAS SHAW or PHILADELPHIA, PENNSYLVANIA.
- My invention consists in the operation of a water-plunger, in the manner and for the purpose hereinafter described.
- the object of the invention is to supply air under pressure to air-chambers.
- the sketch represents a side view of air-pump, of which A is a plain pipe or cylinder, supported and closed at its lower end by base B, and closed at its upper end by screw-cap F, and is provided with inlet-valve E and outlet-valve D and stop-cock G, to operate as hereafter described.
- stop-cock U In the operation of the air-pump it is important to connect stop-cock U with the pumping-barrel of an ordinary pump, and to connect the outlet-valve D with the air-chambers to be supplied with air.
- valve C and the pipe connected therewith to the pump be of large capacity, and that the chamber A should be a long vertical cylinder, in order that the momentum imparted to the column of water in chamber A shall overcome, at the terminus of the upstroke, the otherwise equally-balanced pressure at top of chamberA and the pressure in the air-chamber.
Description
UNITED STATES I'PATENT OFFICE.
THoMAS SHAW, or PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN SUPPIIVING AIR TO AIR-CHAMBERS.
Specification forming part of Letters Patent No. 147,870, dated February 24, 1874; application filed December 1, 1873.
To all whom it may concern:
Be it known that I, THOMAS SHAW, of th city and county of Philadelphia, Pennsylvania, have invented a new and Improved Mode of Pumping Air into Air-Chambers, &c.; and I. hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon.
My invention consists in the operation of a water-plunger, in the manner and for the purpose hereinafter described. The object of the invention is to supply air under pressure to air-chambers.
In order to enable others to use and practice my invention, I will proceed to describe its construction and operation.
On reference to the accompanying drawing, which forms part ofthe specification, the sketch represents a side view of air-pump, of which A is a plain pipe or cylinder, supported and closed at its lower end by base B, and closed at its upper end by screw-cap F, and is provided with inlet-valve E and outlet-valve D and stop-cock G, to operate as hereafter described.
In the operation of the air-pump it is important to connect stop-cock U with the pumping-barrel of an ordinary pump, and to connect the outlet-valve D with the air-chambers to be supplied with air.
It Will be observed that, when the stop-cock C is in communication andopen to the pumpbarrel, the fluid being' forced in the pump will rush through stop-cock C and lill cham-I Vber A, forcing the previously-inclosed air into the air-chambers. At the same time a portion of the fluid will overow at the valve Dinto the air-chamber, and that, on the return stroke of pump, when any suction is produced, the water will drop in chamber A, becoming a liquid plunger, and causing a partial vacuum, which is lled by air that enters through inletvalve E, when the next succeeding stroke of pump forces the air in the air-chamber, as before described. This affords a constant supply of air to the air-chambers of pumping-engines Without accumulation of heat or loss of power, as the air is completely wiped out of the pumping-chamber A at each stroke, and the escaping fluid keeps the passage cool.
It is important that the valve C and the pipe connected therewith to the pump be of large capacity, and that the chamber A should be a long vertical cylinder, in order that the momentum imparted to the column of water in chamber A shall overcome, at the terminus of the upstroke, the otherwise equally-balanced pressure at top of chamberA and the pressure in the air-chamber.
I do not wish to claim the application of inlet air-valves in combination with pumps for feeding air-chambers, as that is a common device, nor do I claim the alternate illing and emptying of air-chambers by water received from the pump.
What I do claim, and desire to secure by Letters Patent, is
The combination of long vertical cylinder A, stop-cock C, for communication with a pumpbarrel, the air-inlet valve E, and 'the outletvalve D, for communicating with an `air-chamber, all constructed and arranged substantiall y as described.
. THOMAS SHAW. Witnesses:
WM. F. BEEY, WM. GAEwooD.
Publications (1)
Publication Number | Publication Date |
---|---|
US147870A true US147870A (en) | 1874-02-24 |
Family
ID=2217283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US147870D Expired - Lifetime US147870A (en) | Improvement in supplying air to air-chambers |
Country Status (1)
Country | Link |
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US (1) | US147870A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030100527A1 (en) * | 1994-07-15 | 2003-05-29 | The University Of Iowa Research Foundation | Immunostimulatory nucleic acid molecules for activating dendritic cells |
US20040235770A1 (en) * | 2003-04-02 | 2004-11-25 | Coley Pharmaceutical Group, Ltd. | Immunostimulatory nucleic acid oil-in-water formulations and related methods of use |
-
0
- US US147870D patent/US147870A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030100527A1 (en) * | 1994-07-15 | 2003-05-29 | The University Of Iowa Research Foundation | Immunostimulatory nucleic acid molecules for activating dendritic cells |
US20040235770A1 (en) * | 2003-04-02 | 2004-11-25 | Coley Pharmaceutical Group, Ltd. | Immunostimulatory nucleic acid oil-in-water formulations and related methods of use |
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