US1720486A - Method of making valve seats - Google Patents

Method of making valve seats Download PDF

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Publication number
US1720486A
US1720486A US282988A US28298828A US1720486A US 1720486 A US1720486 A US 1720486A US 282988 A US282988 A US 282988A US 28298828 A US28298828 A US 28298828A US 1720486 A US1720486 A US 1720486A
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US
United States
Prior art keywords
casting
seat
metal
valve seat
cylinder
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
US282988A
Inventor
August H Leipert
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.)
International Motor Co
Original Assignee
International Motor Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Motor Co filed Critical International Motor Co
Priority to US282988A priority Critical patent/US1720486A/en
Priority to US360361A priority patent/US1754720A/en
Application granted granted Critical
Publication of US1720486A publication Critical patent/US1720486A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/20—Making machine elements valve parts
    • B21K1/24—Making machine elements valve parts valve bodies; valve seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • 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
    • Y10T29/4927—Cylinder, cylinder head or engine valve sleeve 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49298—Poppet or I.C. engine valve or valve seat making
    • Y10T29/49306—Valve seat making

Definitions

  • valve seat can be materially improved and the heat transfer thereloetween correspondingly increased if the valve seat is formed in such manner that the engagement by-the undercut seat of the'cylinder casting is rendered tight both when the engineis hot and when cold.
  • heat transfer thereloetween correspondingly increased if the valve seat is formed in such manner that the engagement by-the undercut seat of the'cylinder casting is rendered tight both when the engineis hot and when cold.
  • valve seat is initially heated and is expanclmg faster than the cylinder casting, the valve seat grips against the undercut portion a of the groove a.
  • the valve seat is contracting 1t grips against the external periphthe fact that the valve seat is formed of cry a of the rib a
  • the seat aluminum bronze and the cylinder casting of cast iron the coeflicients of expansion of these two elements differ and the expansion thereof varies with the variation in temperature.
  • the present invention has for an object the provision of a valve seat and method of forming the same which insures tightness thereof under all operating c nditions, thus materially decreasing the te perature of the .valve seat and bettering the operating conditions thereof.
  • the invention will be understood more fully in connection with the accompanying d rawmgs, wherein I Figure l is a view in section showing the manner in which the cylinder casting is undercut to receive the-seat.
  • Figure 2 isa view in section taken on line a 2-2 of Figure 3, and looking in the direction of the arrows.
  • Figure 3 is a plan view of the valve and seat construction shown in Figure .2.
  • the cylinder'casting a is formed with an annular groove a which is undercut at a Protruding upwardly into the groove as is an annular rib a about which the valve seat is formed. ln forming the seat, a recessed plate 5 is bolted to the top of the cylinder is rigidly held in position and movement cylinder'casting comprising forming means III the casting to retain the seat in position, placin forme adjacent the retaining means, expanding the metal into position,'heating the metal, and again expanding the same.

Description

July 9, 1929. A. H. LEIPERT METHOD OF MAKING VALVE SEATS Filed June 1928 GJl 4Q W Hagan?! liLaioel'l flbtomm J till lid
Patented July 9, 1929.
UNITED STATES AUGUST H. LEIPERT, 0F COLLEGE POINT,
I 1,720,486 PATENT OFFICE.
NEW YORK, ASSIGNOR TO INTERNATIONAL MOTOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.
METHOD on Max Application filed June 5,
As a means for affording a more perfect valve seat and promoting the coollng thereof,
it has been proposed to form the valve seat,
( same, the subject matter embodied herein redating to the same general construction as that shown in the above application.
It has been found that the joint between the valve seat andthe cylinder casting can be materially improved and the heat transfer thereloetween correspondingly increased if the valve seat is formed in such manner that the engagement by-the undercut seat of the'cylinder casting is rendered tight both when the engineis hot and when cold. By reason of me VALVE sna'rs.
1928. Serial No. 282,988.
casting and an annular ring of aluminum bronze c is placed as shown 1n Figure 1. A suitable expander d is then applied to force the ring 0 into the groove (1 so that it fills the entire portion thereof as shown in Figure 2. Suitable notches a are formed in the cylinder casting and the material of the valve seat is forced into these, thus positively se-.
valve seat is initially heated and is expanclmg faster than the cylinder casting, the valve seat grips against the undercut portion a of the groove a. When the valve seat is contracting 1t grips against the external periphthe fact that the valve seat is formed of cry a of the rib a In this manner, the seat aluminum bronze and the cylinder casting of cast iron, the coeflicients of expansion of these two elements differ and the expansion thereof varies with the variation in temperature.
The present invention has for an object the provision of a valve seat and method of forming the same which insures tightness thereof under all operating c nditions, thus materially decreasing the te perature of the .valve seat and bettering the operating conditions thereof. The invention will be understood more fully in connection with the accompanying d rawmgs, wherein I Figure l is a view in section showing the manner in which the cylinder casting is undercut to receive the-seat.
, Figure 2 isa view in section taken on line a 2-2 of Figure 3, and looking in the direction of the arrows.
Figure 3 .is a plan view of the valve and seat construction shown in Figure .2.
Referring to the above drawings, the cylinder'casting a is formed with an annular groove a which is undercut at a Protruding upwardly into the groove as is an annular rib a about which the valve seat is formed. ln forming the seat, a recessed plate 5 is bolted to the top of the cylinder is rigidly held in position and movement cylinder'casting comprising forming means III the casting to retain the seat in position, placin forme adjacent the retaining means, expanding the metal into position,'heating the metal, and again expanding the same.
2. The method offorming a valve seat in a cylinder casting comprising forming means in the casting to retain'the seat in position,
the metal from which the seat is placing the metal from which the seat is 9,
formed adjacent the retaining means. expand- ,ing the metal into position, heatin the metal, and again expanding the same w ile heated.
3. The method of forming a valve seat in a cylinder. casting comprising forming means in the casting to retain the seat in position, placing the metal from which the seat is formed adjacent the retaining means, heating the casting. expanding the metal into position while the casting is heated, heating the metal, andagain expanding the same.
4. The method of forming a valve seat in a cylinder casting comprising forming means in the casting to retain the seat in position, no
- placing the metal from which the seat is formed adjacent the retaining means heating the castings, expanding the metal into position While the casting is heated, allowing the 5 casting to cool, heating the metal, and again expanding the same.
I 5. The method of forming a valve seat in a cylinder casting comprising forming means in the casting to retain the seat in position,
placing the metal from which the seat is formed adjacent the retaining means, heat ing the casting, expanding the metal into position while the casting is heated, allowing the casting to cool, heating the metal, and again expanding the same while heated.
This specification signed this 31st day of May, A. D. 1928.
AUGUST H. LEIPERT.
US282988A 1928-06-05 1928-06-05 Method of making valve seats Expired - Lifetime US1720486A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US282988A US1720486A (en) 1928-06-05 1928-06-05 Method of making valve seats
US360361A US1754720A (en) 1928-06-05 1929-05-04 Expanded valve seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US282988A US1720486A (en) 1928-06-05 1928-06-05 Method of making valve seats

Publications (1)

Publication Number Publication Date
US1720486A true US1720486A (en) 1929-07-09

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US282988A Expired - Lifetime US1720486A (en) 1928-06-05 1928-06-05 Method of making valve seats

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3669408A (en) * 1970-01-14 1972-06-13 Textron Inc Metal to metal sea for extreme temperature applications
US4676482A (en) * 1986-04-28 1987-06-30 Rexnord Inc. Valve seat insert
US5586530A (en) * 1993-07-20 1996-12-24 Yamaha Hatsudoki Kabushiki Kaisha Valve seat insert
US5649358A (en) * 1993-07-20 1997-07-22 Yamaha Hatsudoki Kabushiki Kaisha Method of making a valve seat
US5768779A (en) * 1995-09-14 1998-06-23 Yamaha Hatsudoki Kabushiki Kaisha Method of manufacturing cylinder head for engine
US5778531A (en) * 1995-09-14 1998-07-14 Yamaha Hatsudoki Kabushiki Kaisha Method of manufacturing cylinder head for engine
US20100224160A1 (en) * 2009-03-09 2010-09-09 Gm Global Tecnology Operations, Inc. Engine assembly with valve seat vent passages and method of forming
US20140209175A1 (en) * 2013-01-29 2014-07-31 Mueller International, Llc Air valve seat

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3669408A (en) * 1970-01-14 1972-06-13 Textron Inc Metal to metal sea for extreme temperature applications
US4676482A (en) * 1986-04-28 1987-06-30 Rexnord Inc. Valve seat insert
US5586530A (en) * 1993-07-20 1996-12-24 Yamaha Hatsudoki Kabushiki Kaisha Valve seat insert
US5649358A (en) * 1993-07-20 1997-07-22 Yamaha Hatsudoki Kabushiki Kaisha Method of making a valve seat
US5768779A (en) * 1995-09-14 1998-06-23 Yamaha Hatsudoki Kabushiki Kaisha Method of manufacturing cylinder head for engine
US5778531A (en) * 1995-09-14 1998-07-14 Yamaha Hatsudoki Kabushiki Kaisha Method of manufacturing cylinder head for engine
US20100224160A1 (en) * 2009-03-09 2010-09-09 Gm Global Tecnology Operations, Inc. Engine assembly with valve seat vent passages and method of forming
US8127735B2 (en) * 2009-03-09 2012-03-06 GM Global Technology Operations LLC Engine assembly with valve seat vent passages and method of forming
US20140209175A1 (en) * 2013-01-29 2014-07-31 Mueller International, Llc Air valve seat
US9200718B2 (en) * 2013-01-29 2015-12-01 Mueller International, Llc Air valve seat
US9546738B2 (en) 2013-01-29 2017-01-17 Mueller International, Llc Air valve seat
US9556965B2 (en) 2013-01-29 2017-01-31 Mueller International, Llc Air valve seat

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