US1283138A - Process of making piston-rings. - Google Patents
Process of making piston-rings. Download PDFInfo
- Publication number
- US1283138A US1283138A US11937016A US11937016A US1283138A US 1283138 A US1283138 A US 1283138A US 11937016 A US11937016 A US 11937016A US 11937016 A US11937016 A US 11937016A US 1283138 A US1283138 A US 1283138A
- Authority
- US
- United States
- Prior art keywords
- ring
- rings
- shape
- blank
- arbor
- 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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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/06—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass piston rings from one piece
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49274—Piston ring or piston packing making
- Y10T29/49284—Piston ring or piston packing making including machining or angular cutting
Definitions
- An object of the invention is'to provide a novel process for use in the art of manufacturing piston rings, whereby rings of uniform radialthickness may be produced and so characterizedthat, when compressed within the cylinder for which they are intended, they will impart against the cylin der wall a uniform pressure all around, without variation in the pressure as in the case of rings of usual construction.
- Another object of the invention is to pro- -vide a process of manufacturing and characterizing piston rings of'the open resilient type and of uniform thickness all around, whereby the stresses .of the rings opposite the cuts, and the pressure of the rings against the cylinder walls throughout their equalized throughout the circumferential portions of the rings.
- This characterization of the rings and the equalization of the stresses and pressure are attained in rings of the split construction, as well as in rlngs possessing any of the well known cuts, such,
- Another object of the invention is to provide a process of manufacturing piston rings characterized by'any and all of the novel and useful characteristics hereinafter fully described.
- Figure 1 is a side elevation of a ring blank as it appears in a casting or is cut from a cylinder.
- Fig. 2 is a side elevation of the ring blank after it has been cut to provide an open resilient blank.
- Fig. 3 is a viewshowing the partly formed ring on an arbor, upon which the structure and formation of the ring are changed and the ring is conformed to a new shape.
- Fig. 4 is a view showing the ring after it has been given its new. conformation or shape upon the arbor and removed therefrom.
- Fig. 5 is a side elevation of the finished rmg.
- V Fig. 6 is a sectional view of a cylinder and piston after the finished ring is mounted in connection therewith.
- Figs. 7, 8, 9, 10 and 11 are elevations of a piston ring blank of the split type illustrating different stages through which the blank may be passed before being subjected to the final changes in conformation and shape, as a result of which the principal objects of theinvention are attained.
- Figs. 12 and 13 are views illustrating the ring upon the arbor, upon which thestructure and formation of the ring are changed and the ring is given its final shape before being finished.
- Fig. 14 is a side elevation of the finished ring.
- I Fig. 15 is a sectional view of a cylinder and piston showing the finished spl t ring in connection therewith.
- the unfinished ring blank illustrated in Fig. 1 may be in the form of a casting or cut from a blank or cylinder having an external diameter equal to the internal "diameter of the cylinder for which it is intended, plus the quantity of material to be removed in finishing the ring.
- the unfinished ring blank illustrated in Fig. 1 is produced, it is in theform of a complete uncut ring, and the next step in the manufacture of the ring, illustrated in Figs. 1 to 6, consists in cutting the-ring as indicated at 1 in Fig. 2,
- the open ring blank is then placed upon an arbor 2 (Fig. 3) which expands the ring to a size in excess of the cylinder for which it is intended by radial pressure imparted at several points.
- an arbor 2 (Fig. 3) which expands the ring to a size in excess of the cylinder for which it is intended by radial pressure imparted at several points.
- the ends of the rin are spread apart, the radii from the axis 0 the arbor to the ends of the ring remain approximately constant and unvaried, whereas the radii from the axis of the arbor to the portions of the ring in termediate of the ends to the first points of contact. with the arbor are of progressively increasing length, it being understood that the points of contact of the arbor are on the same radii of curvature.
- the .portion of the ring which is subjected to expanding pressure by the arbor is on the same radii .of curvature, Whereas the portions of the ring between the ends thereof and the first points of contact with the arbor are on different radii of curvature which are approximately the same as the radii of curvature of the original ring blank.
- the ring is next subjected to heat while on the arbor until the structure thereof is changed and corrected by rearrangement of the molecules in conformity with the new shape, so that when the ring is removed from the arbor it retains the size and shape given it thereby.
- the ring after it has been subjected to heat and removed from the arbor,
- the ring illustrated in Figs. 7 to 15 inelusive, is a split ring having its ends overlapping for a portion of its circumference and held together throughout their length by the resiliency of the metal, and also having a conformation whereby the radial pressure of the ring is properly proportioned and equalized in order to obtain uniform pressure against the cylinder all around.
- the split ring is produced from an annular means blank and is cut to form a spiral slot 4 from a pointnear one edge of the ring to a diametrically opposite point near the opposite edge thereof as illustrated in Fig. 7.
- the next operation consists in cutting narrow slits or cuts through the edges of the ring opposite the ends of the spiral slot as indlcated at- 5, in order to provide a blank for an open resilient ring having overlapping ends.
- the ring is next inverted, as illustrated in Fig. 9, by reversing the relative positions of the ends by passing one by the other, and the inverted ring thus produced is heated'or hammered to correct and change the arrangement of the molecular structure thereof in conformity with the new shape.
- the ring is re-inverted to to fit properly within the groove for which it is intende
- the ring is then placed upon an arbor 6 which expands the rin to a size in excess of the cylinder for whlch it is intended by radial pressure imparted at several points.
- the extremities of the overlapping portions of the ring are not expanded so that the radii of curvature of the overlapping portions adjacent to the ends thereof remain approximately constant and unvaried, Whereas the radii from the axis of the arbor to the portions between the ends and the first points of contact with the arbor are of progressively increasing length until they attain a length equal to the radii of curvature of the remaining portions of the ring.
- the ring is next subjected to heat while on the arbor, until the molecules thereof are changed in conformity with the new shape,
- piston rings which consists inexpanding annular, cut rings to a size in excess of the diameter of the cylinder for which they are intended, leaving the end portions of the rings of approximately the same curvature as orig nally, and heating the expanded rings until the tension of the metal is changed and set in the expanded shape.
- piston rings which consists in expanding annular rings to a size in excess of the diameter of the cylinder for which the are intended, forming the end portions 0 the rings with approximately the same radii of curvature as originally, setting the tension of the rings in their expanded shape, and finishing the rings.
- piston rings which consists in mechanically expandlng a circular blank so that one segment thereof is of shorter radius of curvature than the adjacent portion, setting the ring in its expanded shape, and then finishing the ring while in the ex anded shape.
- piston rings which consists in mechanically expanding an open, circular, metallic, unfin ished blank, so that the segments of the blank extending at each-side of the out are of approximately the same radii of curvature as originally and the remainder of the blank of greater radius of curvature, then fixing the blank so that it will remain set in the expanded shape, and then finishing the rlng to size.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11937016A US1283138A (en) | 1916-09-11 | 1916-09-11 | Process of making piston-rings. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11937016A US1283138A (en) | 1916-09-11 | 1916-09-11 | Process of making piston-rings. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1283138A true US1283138A (en) | 1918-10-29 |
Family
ID=3350724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11937016A Expired - Lifetime US1283138A (en) | 1916-09-11 | 1916-09-11 | Process of making piston-rings. |
Country Status (1)
Country | Link |
---|---|
US (1) | US1283138A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2467414A (en) * | 1943-06-16 | 1949-04-19 | Wilkening Mfg Co | Apparatus for making piston rings |
-
1916
- 1916-09-11 US US11937016A patent/US1283138A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2467414A (en) * | 1943-06-16 | 1949-04-19 | Wilkening Mfg Co | Apparatus for making piston rings |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ABLECO FINANCE LLC, NEW YORK Free format text: SECURITY AGREEMENT;ASSIGNOR:HANDY & HARMAN;REEL/FRAME:014523/0298 Effective date: 20040331 |
|
AS | Assignment |
Owner name: CONGRESS FINANCIAL CORPORATION, AS AGENT, NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:HANDY & HARMAN;REEL/FRAME:015361/0300 Effective date: 20040331 |
|
AS | Assignment |
Owner name: HANDY & HARMAN, NEW YORK Free format text: RELEASE OF SECURITY INTEREST IN PATENTS;ASSIGNOR:WELLS FARGO BANK, NATIONAL ASSOCIATION;REEL/FRAME:029300/0306 Effective date: 20121108 |