US984888A - Piston-packing expander. - Google Patents
Piston-packing expander. Download PDFInfo
- Publication number
- US984888A US984888A US59337910A US1910593379A US984888A US 984888 A US984888 A US 984888A US 59337910 A US59337910 A US 59337910A US 1910593379 A US1910593379 A US 1910593379A US 984888 A US984888 A US 984888A
- Authority
- US
- United States
- Prior art keywords
- ring
- expander
- piston
- strip
- flange
- 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
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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
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
- F16J9/061—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging using metallic coiled or blade springs
- F16J9/063—Strip or wire along the entire circumference
Definitions
- My present invention 1s an improvement ⁇ on the constructions shown in my Patent No. 802,540, dated Aug. 6, 1.907, and that l shown in patent to John Emory Meek, No.
- Figure 1 is a perspective View of the exandcr ring
- F ig. 2 is a cross section on ine 2-2 of Fig. l.
- 5 is the ring of highly tempered steel, preferably of circular cross section, which may be formed by cutting the required length from a steel rod of the proper size and bending to form a circle.
- 6 is a strip of thin sheet metal. or mild steel, eut from an ordinary sheet of4 such material.
- This thin strip of metal ntay be attached to the ⁇ ring 5 in any convenient vay, as by welding, but preferably I fasten it by bending a portion 4 of one edge of the strip about the 60 ring 5, as shown in the drawings.
- the advantages of my invention include. the prod" Lion at low cost of a packing expander having the highest resiliency and the thinnest possible flange.
- the fiange being formed of metal of low temper will bend without breaking, so that the possibilities of destruction in use and handling are decreased, as well as those in manufacture.
- the ring 5 might. be omitted if the bent strip of metal 6 had sufficient elasticity and resiliency, but preferably I employ the ring 5, as it can be given the necessary temper to produce exactly the graduated degree of resiliency desired for different sizes of cylinder and differentV degrees of air pressure, while it would be practically difliculty if not impossible 'to give a very high temper to the thin strip 6 and then bend or draw it into the shape required.
- a piston packing expander having in combination a ring of elastic metal and a thin strip of sheet material fastened .to the ring and forming a flange thereon, extending at right angles to the plane of the ring.
- a pistonpacking expander having in combination a ring of elastic inetal and a thin strip of sheet material wrapped around the ring and projecting at ri ht angles tothe plane of the ring to form a ange thereon.
- composite piston packing expander formed of a ring of spring steel of "'ci'rcular cross section, and a strip of sheet st* bent around the ring and projecting at right angles to the plane of the ring to forni a flange from the outer side of the ring.
- a composite piston expander formed of a ring of steel of high temper, and a Strip of sheet metal of low temper and high duclility fastened to 'the ring :1nd forming a flange thereon, extending :it right angles to the pla-ne of the ring.
- a Composite pimin expander formed of :i ringof'stvznmf liigggli temper, and zx strip tilitxY bont :i1-mind the rilwA and no'ecinq l h l.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
G. GHRISTENSUN. PISVTON PACKING EXPANDER. APPLICATION FILED NOV.`21, 1910.
PasnteaFeb. 21, 1,911
UNITED sra'LswPATENT ouin-on.
GEORGE cHBIsTENsoN, or NEVADA. MISSOURI. iA'ssIGNoR To H. w. JOHNS-MANVILLE COMPANY, A` CORPORATION OF NEW YORK.
PISTON-PCKING EXPANDER.
Specification of Letters Patent.
Patented Feb. 21, 1911.
application med november-"21, 1910. serial No. 593,379.
-for use on pistons in the cylinders of air brakes.
My present invention 1s an improvement `on the constructions shown in my Patent No. 802,540, dated Aug. 6, 1.907, and that l shown in patent to John Emory Meek, No.
. above noted.
924,087, dated June 8, 1900. ln a packing expander for air brake pistons of the gencral character shown in my said patent it is desirable, both for economy of material, and for reasons of adaptability to existing structures, to -makc the flange portion as thin as possible, as set out in the patentto Meek But in order to secure the highest degree of elasticity and resiliency in the completed structure, it is necessary t0-use a highly tempered steel, and such highly tempered steel can not conveniently be` drawn down lto the thin flange desired, when the structure is made integral by the process of drawing through a die, which is the most economical method of manufacture. To avoid the diiiicult-ies arising from these conflicting conditions I have invented a composite structure in which the resiliency is furnished by a ring of spring steel'of preferably circular cross section while thc flange is formed of a thin strip of sheet. steel which may be of low temper and less resiliency.
The best form of apparatus at present known to me embodying my invention is illustrated in the accompanying sheet of drawing in which:
Figure 1 is a perspective View of the exandcr ring, and F ig. 2 is a cross section on ine 2-2 of Fig. l.
Through the drawings like reference chan. acters indicate like parts.
5 is the ring of highly tempered steel, preferably of circular cross section, which may be formed by cutting the required length from a steel rod of the proper size and bending to form a circle. 6 is a strip of thin sheet metal. or mild steel, eut from an ordinary sheet of4 such material. This thin strip of metal ntay be attached to the` ring 5 in any convenient vay, as by welding, but preferably I fasten it by bending a portion 4 of one edge of the strip about the 60 ring 5, as shown in the drawings. Preferably the abutting ends of the circular structure so formedarc cut diagonally, as indicated at 7 in Fig. 1.
The advantages of my invention include. the prod" Lion at low cost of a packing expander having the highest resiliency and the thinnest possible flange. The fiange being formed of metal of low temper will bend without breaking, so that the possibilities of destruction in use and handling are decreased, as well as those in manufacture.
Various chr.l es in shape and proportions of parts could be made in p actice without departing from the principle of my invention. In some cases the ring 5 might. be omitted if the bent strip of metal 6 had sufficient elasticity and resiliency, but preferably I employ the ring 5, as it can be given the necessary temper to produce exactly the graduated degree of resiliency desired for different sizes of cylinder and differentV degrees of air pressure, while it would be practically difliculty if not impossible 'to give a very high temper to the thin strip 6 and then bend or draw it into the shape required. i
Having, therefore, describedl my invention, I claim: l 1. A piston packing expander having in combination a ring of elastic metal and a thin strip of sheet material fastened .to the ring and forming a flange thereon, extending at right angles to the plane of the ring.
Q. A pistonpacking expander having in combination a ring of elastic inetal and a thin strip of sheet material wrapped around the ring and projecting at ri ht angles tothe plane of the ring to form a ange thereon.
composite piston packing expander formed of a ring of spring steel of "'ci'rcular cross section, and a strip of sheet st* bent around the ring and projecting at right angles to the plane of the ring to forni a flange from the outer side of the ring.
4. A composite piston expander formed of a ring of steel of high temper, and a Strip of sheet metal of low temper and high duclility fastened to 'the ring :1nd forming a flange thereon, extending :it right angles to the pla-ne of the ring.
.3. A Composite pimin expander formed of :i ringof'stvznmf liigggli temper, and zx strip tilitxY bont :i1-mind the rilwA and no'ecinq l h l.
nt right anillas to the plane of the ung to forni a flange from the outer sld@ 0l the ring.
` (i. A nihil mw inclini" ex )ander comhaving nnc odge cin-ved bnvk upon itself and the strip-so formed bnnt Into a Circle Wll'h dismnnected but nlinftnig ends, the Short bent edge of t'llc Simp lwing on tho Inside of the ring' so fm'nwd. und the long nncnrvcd edge extendingy nt ,right ingles m the' plane of sand ring.
GEORGE (l1 l Rl'lll f'itnessesz A. PARKER Snri'ln, M. G. Cmwifonn.-
uson.`
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US59337910A US984888A (en) | 1910-11-21 | 1910-11-21 | Piston-packing expander. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US59337910A US984888A (en) | 1910-11-21 | 1910-11-21 | Piston-packing expander. |
Publications (1)
Publication Number | Publication Date |
---|---|
US984888A true US984888A (en) | 1911-02-21 |
Family
ID=3053236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US59337910A Expired - Lifetime US984888A (en) | 1910-11-21 | 1910-11-21 | Piston-packing expander. |
Country Status (1)
Country | Link |
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US (1) | US984888A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445882A (en) * | 1943-12-10 | 1948-07-27 | Bendix Aviat Corp | Sealing means |
US2608453A (en) * | 1949-09-03 | 1952-08-26 | Frisby Corp | Piston packing ring |
US20070201033A1 (en) * | 2006-02-24 | 2007-08-30 | The General Hospital Corporation | Methods and systems for performing angle-resolved fourier-domain optical coherence tomography |
-
1910
- 1910-11-21 US US59337910A patent/US984888A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445882A (en) * | 1943-12-10 | 1948-07-27 | Bendix Aviat Corp | Sealing means |
US2608453A (en) * | 1949-09-03 | 1952-08-26 | Frisby Corp | Piston packing ring |
US20070201033A1 (en) * | 2006-02-24 | 2007-08-30 | The General Hospital Corporation | Methods and systems for performing angle-resolved fourier-domain optical coherence tomography |
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