US2123165A - Slipper-type piston blank - Google Patents

Slipper-type piston blank Download PDF

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Publication number
US2123165A
US2123165A US125753A US12575337A US2123165A US 2123165 A US2123165 A US 2123165A US 125753 A US125753 A US 125753A US 12575337 A US12575337 A US 12575337A US 2123165 A US2123165 A US 2123165A
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United States
Prior art keywords
slipper
piston
chucking
skirt
projections
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
Application number
US125753A
Inventor
Otto W Brown
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WISCONSIN MACHINERY AND Manufacturing CO
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WISCONSIN MACHINERY AND Manufacturing CO
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Filing date
Publication date
Application filed by WISCONSIN MACHINERY AND Manufacturing CO filed Critical WISCONSIN MACHINERY AND Manufacturing CO
Priority to US125753A priority Critical patent/US2123165A/en
Application granted granted Critical
Publication of US2123165A publication Critical patent/US2123165A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • 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
    • Y10T29/49249—Piston making
    • Y10T29/49256—Piston making with assembly or composite article making
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12229—Intermediate article [e.g., blank, etc.]
    • Y10T428/12264—Intermediate article [e.g., blank, etc.] having outward flange, gripping means or interlocking feature
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12361—All metal or with adjacent metals having aperture or cut
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12389—All metal or with adjacent metals having variation in thickness

Definitions

  • the invention relates to slipper-type pistons.
  • the piston skirt is not continuous at its open end, but has recesses or cut-outs on opposite sides of such extent and character that the usual or conventional type of chucking or holding devices for finishing of pistons can not be used.
  • An object of the invention is to provide an improved slipper-type piston blank which is so constructed as to enable standard or ordinary piston finishing equipment to be readily used in machining and finishing the piston blank.
  • the invention further 1consists in the several features hereinafter described and claimed.
  • Fig. 1 is a longitudinal sectional view of a slipper-type piston blank constructed in accordance with the invention, the piston blank being mounted on chucking means;
  • Fig. 2 is another longitudinal sectional view of the piston blank taken on a plane at rightangles to the plane of Fig. 1, a severable chucking section of the piston blank being shown partly in dotted lines and partly in full lines;
  • Fig. 3 is a side view of the finished piston and its severed chucking section
  • Fig. 4 is an end view of the piston blank with its chucking section, parts being broken away and parts being shown in section.
  • I l designates a slipper-type piston having a cylindrical skirt II and a head l2.
  • the skirt has the usual piston ring grooves l3 and is provided with the usual bushed piston pin bosses Hi.
  • the piston skirt is cut away or apertured at I5 at its open end on the pinhole sides to form diametrically opposite slipper projections IS.
  • a rigid annular chucking member or section II is cast integral with the ends of the slipper projections I6 to form a piston blank and is concentric with the piston skirt and of the same external diameter, the chucking section defining edges of the apertures l5 in the skirt.
  • the junction regions between the skirt and chucking section are indicated at l8 and are diametrically opposite.
  • the chucking section I! is adapted to be engaged, externally and internally, by the usual concentric with the external diameter, to be engaged by the chucking means, and the outer end of the chucking section has a fiat machined surface 2
  • the piston head I2 is provided with the usual bore 22 to receive a supporting center 23.
  • the chucking device [9 is here indicated to be of the wellknown cone and flat drive type in which a frusto-conical portion enters and centers the open end of the piston and another portion enters between the piston bosses.
  • annular chucking section or collar ll of the piston blank being integrally attached to What will eventually be the free ends of the slipper projections, serves to prevent deformation or deflection of these projections during machining of the blank.
  • the chucking section I! is severed from the piston skirt by a suitable cut-ofi tool, not shown, cutting inwardly at an annular groove 24 formed about the chucking section.
  • the finished slipper-type piston then has the appearance seen in Fig. 3.
  • the severed annular chucking section may either be discarded or be used for other purposes.
  • slipper-type pistons may be accurately and easily machined, ground, and otherwise finished by the standard or conventional type of finishing equipment commonly used for ordinary pistons.
  • a slipper-type piston blank having a skirt with slipper projections, and having a severable, centrally open, annular chucking section integrally joined to the ends of said slipper projections and presenting an inner chucking periphery.
  • a slipper-type piston blank having a skirt with slipper projections, and having a severable, centrally open, annular chucking section integrally joined to the ends of said slipper projections, said chucking section having the same external diameter as the skirt and presenting an inner chucking periphery.
  • a slipper-type piston blank having a skirt with diametrically opposite slipper projections. and having a severable, centrally open, annular chucking section integrally joined at diametrically opposite points to the ends of said slipper projections, said chucking section having an inner chucking periphery.
  • a slipper-type piston blank having a skirt with slipper projections, and having a severable, centrally open, annular chucking section integrally joined to the ends of said slipper projections, said chucking section having a peripheral groove formed thereabout at its line of severance, and having an inner chucking periphery.
  • a slipper-type piston blank having a skirt with slipper projections and having a severable, centrally open, annular chucking section integrally joined to the ends of said slipper projections, the open center of said chucking section defining an inner chucking periphery, the diameter of which is of the same order of size as the inner diameter of the piston skirt, said chucking section forming a support to prevent deflection of said slipper projections during machining of the blank.
  • a slipper-type piston blank having a skirt with diametrically opposite apertures and a severable, centrally open, annular chucking section concentric and integral With the open end portion of said skirt and defining edges of said apertures, said chucking section having an inner chucking periphery, and the portions of said skirt between said apertures forming slipper projections the ends of which are located at the line of severance of said chucking section, said chucking section forming a support to prevent deflection of said slipper projec tions during machining of the blank.

Description

July 12, 1938. o. w. BROWN SLIPPER-TYPEPISTON BLANK Filed Feb. 15, 1937 n I x N r o m A! H H H H H t Jo a 0 8 1 w 1 FIG, 2 .11
ATTORNEY Patented July 12, 1938 PATENT OFFICE SLIPPER-TYPE- PISTON BLANK Otto W. Brown, Milwaukee, Wis., assignor to Wisconsin Machinery and Manufacturing Company, West Allis, Wis., a corporation of Wisconsin Application February 15, 1937, Serial No. 125,753
6 Claims.
The invention relates to slipper-type pistons.
In a slipper-type piston of customary construction, the piston skirt is not continuous at its open end, but has recesses or cut-outs on opposite sides of such extent and character that the usual or conventional type of chucking or holding devices for finishing of pistons can not be used.
, An object of the invention is to provide an improved slipper-type piston blank which is so constructed as to enable standard or ordinary piston finishing equipment to be readily used in machining and finishing the piston blank.
The invention further 1consists in the several features hereinafter described and claimed.
In the accompanying drawing,
Fig. 1 is a longitudinal sectional view of a slipper-type piston blank constructed in accordance with the invention, the piston blank being mounted on chucking means;
Fig. 2 is another longitudinal sectional view of the piston blank taken on a plane at rightangles to the plane of Fig. 1, a severable chucking section of the piston blank being shown partly in dotted lines and partly in full lines;
Fig. 3 is a side view of the finished piston and its severed chucking section, and
Fig. 4 is an end view of the piston blank with its chucking section, parts being broken away and parts being shown in section.
In the drawing, I l] designates a slipper-type piston having a cylindrical skirt II and a head l2. The skirt has the usual piston ring grooves l3 and is provided with the usual bushed piston pin bosses Hi. The piston skirt is cut away or apertured at I5 at its open end on the pinhole sides to form diametrically opposite slipper projections IS.
A rigid annular chucking member or section II is cast integral with the ends of the slipper projections I6 to form a piston blank and is concentric with the piston skirt and of the same external diameter, the chucking section defining edges of the apertures l5 in the skirt. The junction regions between the skirt and chucking section are indicated at l8 and are diametrically opposite. The chucking section I! is adapted to be engaged, externally and internally, by the usual concentric with the external diameter, to be engaged by the chucking means, and the outer end of the chucking section has a fiat machined surface 2| perpendicular to the piston axis. The piston head I2 is provided with the usual bore 22 to receive a supporting center 23. The chucking device [9 is here indicated to be of the wellknown cone and flat drive type in which a frusto-conical portion enters and centers the open end of the piston and another portion enters between the piston bosses.
The annular chucking section or collar ll of the piston blank, being integrally attached to What will eventually be the free ends of the slipper projections, serves to prevent deformation or deflection of these projections during machining of the blank.
After the piston is finished, the chucking section I! is severed from the piston skirt by a suitable cut-ofi tool, not shown, cutting inwardly at an annular groove 24 formed about the chucking section. The finished slipper-type piston then has the appearance seen in Fig. 3. The severed annular chucking section may either be discarded or be used for other purposes.
By means of the invention, slipper-type pistons may be accurately and easily machined, ground, and otherwise finished by the standard or conventional type of finishing equipment commonly used for ordinary pistons.
What I claim as new and desire to secure by Letters Patent is:
1. A slipper-type piston blank having a skirt with slipper projections, and having a severable, centrally open, annular chucking section integrally joined to the ends of said slipper projections and presenting an inner chucking periphery.
2. A slipper-type piston blank having a skirt with slipper projections, and having a severable, centrally open, annular chucking section integrally joined to the ends of said slipper projections, said chucking section having the same external diameter as the skirt and presenting an inner chucking periphery.
3. A slipper-type piston blank having a skirt with diametrically opposite slipper projections. and having a severable, centrally open, annular chucking section integrally joined at diametrically opposite points to the ends of said slipper projections, said chucking section having an inner chucking periphery.
4. A slipper-type piston blank having a skirt with slipper projections, and having a severable, centrally open, annular chucking section integrally joined to the ends of said slipper projections, said chucking section having a peripheral groove formed thereabout at its line of severance, and having an inner chucking periphery.
5. As an article of manufacture, a slipper-type piston blank having a skirt with slipper projections and having a severable, centrally open, annular chucking section integrally joined to the ends of said slipper projections, the open center of said chucking section defining an inner chucking periphery, the diameter of which is of the same order of size as the inner diameter of the piston skirt, said chucking section forming a support to prevent deflection of said slipper projections during machining of the blank.
6. As an article of manufacture, a slipper-type piston blank having a skirt with diametrically opposite apertures and a severable, centrally open, annular chucking section concentric and integral With the open end portion of said skirt and defining edges of said apertures, said chucking section having an inner chucking periphery, and the portions of said skirt between said apertures forming slipper projections the ends of which are located at the line of severance of said chucking section, said chucking section forming a support to prevent deflection of said slipper projec tions during machining of the blank.
O'I'IO W. BROWN.
US125753A 1937-02-15 1937-02-15 Slipper-type piston blank Expired - Lifetime US2123165A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789344A (en) * 1951-04-23 1957-04-23 American Radiator & Standard Method of cold shaping tubular steel articles and product
US3403482A (en) * 1966-02-25 1968-10-01 Trw Inc Adapter apparatus for resizing pistons
WO1993025828A1 (en) * 1992-06-16 1993-12-23 Woessner Eckart Piston for an internal-combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789344A (en) * 1951-04-23 1957-04-23 American Radiator & Standard Method of cold shaping tubular steel articles and product
US3403482A (en) * 1966-02-25 1968-10-01 Trw Inc Adapter apparatus for resizing pistons
WO1993025828A1 (en) * 1992-06-16 1993-12-23 Woessner Eckart Piston for an internal-combustion engine

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