US83188A - Improvement in pistons for steam-engines - Google Patents
Improvement in pistons for steam-engines Download PDFInfo
- Publication number
- US83188A US83188A US83188DA US83188A US 83188 A US83188 A US 83188A US 83188D A US83188D A US 83188DA US 83188 A US83188 A US 83188A
- Authority
- US
- United States
- Prior art keywords
- steam
- piston
- head
- improvement
- pistons
- 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
- 210000000088 Lip Anatomy 0.000 description 20
- 238000010276 construction Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/02—Bearing surfaces
Definitions
- the design of my invention is to prevent this wear by constructing the piston-head in the manner here inafter described, so that there shall be an upward pressure of the steam exactly suiicient to counterbalance the weight of the piston-head and rod.
- G is the lower inside of cylinder, on which the piston-head rests and moves, and on which comes the wearlof the piston, and which it is the purpose of my improvement to prevent;
- B B are the followers of the piston-head
- A is a lip or projecting flange from the follower. This lip should have a surface suiiiciently large for the upper pressure of the steam to counterbalance the weight of piston-head and rod.
- the piston-head and rod weigh two hundred pounds, having a pressure of fifty pounds to the square inch, then it is found that a lip having a surface 'of four inches, will allow an upward pressure of two hundred pounds, just sucient to balance the gravity of the piston, and permitting it to move backwards and forwards comparatively free from friction, and without wearing the cylinder or box.
- both lips may be used on and the upward pressure divided between the two lips.
- This Yimprovement is applicable for all horizontal cylinders, for air, steam, or water.
- lip A is suicient to ac- In testimony that I claim the foregoing, I have here- 25th day of August, 1868.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
regalati tat'm "www @fina w anni www H. N. J. MANSFIELD, OF MALONE, N EW YORK.- Lmm Patent No. 83,188, camz octava 2o, 186s.
The Schedule referred to in these Letters Patent and making part ofthe same..
To all Iwho/m, 'it fnul/y camara:
Beit known that I, H. N. J. MANSFIELD, of Malone, in the county of Franklin, and in the State of New York, have invented certain new and useful Improvements in Pistons for Steam-Engines; and do hereby declare that the following is a full, clear, and exact description thereof', reference being had to the accompanying drawings, and to the letters of reference marked thereon.
In the presenti ordinary style of cylinder, horizontal, the whole weight of the piston-head and rod is continually borne by the lower inside of the cylinder, and bythe stuiIing-box, causing a rapid wear of the lower cylinder, on its bottom and sides, also a wear of the sniffing-box, as well as of the packing-rings and followers of the piston-head. From this it results that the best piston-head soon becomes leaky, and the stuifing-box and cylinder are cut downwards.
The design of my invention is to prevent this wear by constructing the piston-head in the manner here inafter described, so that there shall be an upward pressure of the steam exactly suiicient to counterbalance the weight of the piston-head and rod.
In order to enable others skilled in the art to make and use my inventionI will now proceed to describe its construction and operation, referring to the annexed drawings, which form a part of this specification, and which represent a vertical section of a steam-cylinder, showing my `counter-balance on steam-piston.
G is the lower inside of cylinder, on which the piston-head rests and moves, and on which comes the wearlof the piston, and which it is the purpose of my improvement to prevent;
B B are the followers of the piston-head;
G C packing-rings ofthe piston-head;
F, stuffing-box;
D D', steam-ports; and v respectively the upper and lower lips of the which constitute my improvement,
A A', follower,
In the drawings, the 'arrows show the way in which the steam is brought to bear upon the piston.
The steam entering through the steam-port D passes to A, which is a lip or projecting flange from the follower. This lip should have a surface suiiiciently large for the upper pressure of the steam to counterbalance the weight of piston-head and rod.
For example, if the piston-head and rod weigh two hundred pounds, having a pressure of fifty pounds to the square inch, then it is found that a lip having a surface 'of four inches, will allow an upward pressure of two hundred pounds, just sucient to balance the gravity of the piston, and permitting it to move backwards and forwards comparatively free from friction, and without wearing the cylinder or box.
In new-made cylinders, the e'omplish the purpose.
In old cylinders, which have been worn down, and where steam lmight easily pass above the lip A, the purpose is accomplished by y'making a lip, A', at the bottom of the follower, by takingout or sinkjng a segment of its surface, as shown in the drawingg'or both lips may be used on and the upward pressure divided between the two lips.
This Yimprovement is applicable for all horizontal cylinders, for air, steam, or water.
Having thus fully described my invention,
The construction of the piston-head for horizontal cylinders, with the projecting lip A and indentation A', near its periphery, whereby to obtain upward pressure of steam, all substantially as herein set forth.
lip A is suicient to ac- In testimony that I claim the foregoing, I have here- 25th day of August, 1868.
unto set my hand, this H. N. J. MANSFIELD.
Witnesses:
ROYAL Comun, J. H. MOORE.
and the engine is run with steam.
the follower at the same time,
and desire to secure by Letters n
Publications (1)
Publication Number | Publication Date |
---|---|
US83188A true US83188A (en) | 1868-10-20 |
Family
ID=2152681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US83188D Expired - Lifetime US83188A (en) | Improvement in pistons for steam-engines |
Country Status (1)
Country | Link |
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US (1) | US83188A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2974541A (en) * | 1954-09-07 | 1961-03-14 | Gen Motors Corp | Offset piston-pin balancing arrangement for engines |
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0
- US US83188D patent/US83188A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2974541A (en) * | 1954-09-07 | 1961-03-14 | Gen Motors Corp | Offset piston-pin balancing arrangement for engines |
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