US1826549A - Process of making composite valves - Google Patents

Process of making composite valves Download PDF

Info

Publication number
US1826549A
US1826549A US725024A US72502424A US1826549A US 1826549 A US1826549 A US 1826549A US 725024 A US725024 A US 725024A US 72502424 A US72502424 A US 72502424A US 1826549 A US1826549 A US 1826549A
Authority
US
United States
Prior art keywords
pocket
stem
rod
blank
making composite
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
US725024A
Inventor
Jardine Robert
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.)
RICH TOOL Co
Original Assignee
RICH TOOL 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 RICH TOOL Co filed Critical RICH TOOL Co
Priority to US725024A priority Critical patent/US1826549A/en
Application granted granted Critical
Publication of US1826549A publication Critical patent/US1826549A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B21K1/22—Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K5/00—Gas flame welding
    • B23K5/18—Gas flame welding for purposes other than joining parts, e.g. built-up welding
    • 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
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/46—Clamping area between two screws placed side by side
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • 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
    • Y10T29/49307—Composite or hollow valve stem or head making
    • Y10T29/49309—Composite or hollow valve stem or head making including forging
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49915—Overedge assembling of seated part
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49925—Inward deformation of aperture or hollow body wall
    • Y10T29/49934—Inward deformation of aperture or hollow body wall by axially applying force
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49936—Surface interlocking

Definitions

  • This invention relates to poppet valves of the envelope type in which the stem and the seating portion of the head are made of dif ferent pieces mechanically connected, and has for its principal object to permit those pieces to be homogeneously united with ease and economy.
  • FIG. 1 is a sectional view illustrating the stem and head blanks assembled preparatory to welding, or otherwise homogeneously uniting them;
  • Fig. 2 is a similar sectional view illustrating the blanks seated in a lower die preparatory to forging
  • Fig.3 is a similar sectional View illustrating the valve represented by the two blanks after forging.
  • the head blank 10 may be a spherical ball of metal having the characteristics desired in the head or the seating portion of the head of the valve, and having a pocket 11 extend- .ing diametrically into the blank somewhat beyond the center. lVhen' the pocket is made by a drill the bottom 12 thereof will correspond to the shape of the drill point.
  • the stein blank 13 may be a suitable length of rod having the characteristics desired in f the stem of the valve and its lower end may be fi shed.
  • the blanks 10 and 13 are assembled in the relation illustrated in Fig. 1, electrodes 15 and 16 are applied, a current of very low voltage and very high amperage is turned on, the bottom of the pocket and the end'of the stem blank are separated a few thousandths and then pressed together;
  • the separation is made an arc as large as the stem blank is formed and fuses the metal at the bottom of the pocket and the end of the stem, and under the subsequent count oithe low-voltage the small clearance 14 will prevent an are between the walls of pressure a perfect weld is elfected.
  • the stem blank and at the same time there will, be insufficient air in the thin annulusrepresented by the clearance to permit any appreciable oxidation of the metal.
  • the united blanks are then heated and 'forgedby inserting them into a cavity 17 in a die 18 and exerting pressure on them with an upper die 19.
  • the stem blank is provided with the enlargements 20Yand21 connected bythe waistshaped portion 22' and the head blank is formed into an envelope or jacket 23 covering the top of the stem blank as indicated at 24 and gripping.
  • the waist-shaped portion of the stem blank to the bottom of the pocket results in a homogeneous union between the top portion 24 of the envelope and the top end of the stem blank metal which not only contributes to the strength of the connection but facilitates the. conduction of heat from the stem to the seating portion of the valve head which-is in contact with the cooled cylinder casting.
  • the blanks should not be heated separately before the welding operation because the supply of air usually, present under those conditions would permit the formation of scale on the walls of the pocket and the end of the stem blank, which would not only eliminate the necessary clearance, but would form a defective streak in the finished valve.
  • the homogenous union, of the two blanks may be effected by other processes of welding or b brazing or by inserting between the end of the stem and the bottom of the pocket what may be called an iron cement which, upon fusion, willunite the head and the stem.
  • electricwelding is the preferred means of making this union, and when the voltage is very low the clearance 14 required is very, small. For example, with a valve stem the pocket need only be g" in diameter.
  • the spherical form of head blank is preferred because it lends itself to quantity production with remarkably uniform size, which is important when the forging is to be done in the manner described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Forging (AREA)

Description

Oct. 6, 1931. R. JARDl NE 1,326,549
PROCESS OF MAKING COMPOSITE VALVES Original Filed July 9, 4
[n 2260:.- Rober aralz'ne invention, and in which Patented Get. 6 1931 UNITED STATES PATENT OFFICE ROBERT JARDINE, OF DETROIT, MICHIGAN, ASSIGNOR TO RICH TOOL COMPANY, OF CHICAGO, ILLINOIS, ACORPORATION OF ILLINOIS rnoonss or MAKING comrosrrre varvns Application filed July 9,1924, Serial No. 725,024. Renewed February 29,1928.
I This invention relates to poppet valves of the envelope type in which the stem and the seating portion of the head are made of dif ferent pieces mechanically connected, and has for its principal object to permit those pieces to be homogeneously united with ease and economy.
Furtherobjects and advantages of the invention will become apparent as the disclosure proceeds and the description is read in connection with the accompanying drawings illustrating a selected embodiment of the Fig. 1 is a sectional view illustrating the stem and head blanks assembled preparatory to welding, or otherwise homogeneously uniting them;
Fig. 2 is a similar sectional view illustrating the blanks seated in a lower die preparatory to forging; and
Fig.3 is a similar sectional View illustrating the valve represented by the two blanks after forging.
The head blank 10 may be a spherical ball of metal having the characteristics desired in the head or the seating portion of the head of the valve, and having a pocket 11 extend- .ing diametrically into the blank somewhat beyond the center. lVhen' the pocket is made by a drill the bottom 12 thereof will correspond to the shape of the drill point.
The stein blank 13 may be a suitable length of rod having the characteristics desired in f the stem of the valve and its lower end may be fi shed. The diameter of 'the.stem rod shoul: be less than the diameter of the pocket 11 to afford clearance 14 between the rod an the walls of the pocket.
According to the preferred procedure the blanks 10 and 13 are assembled in the relation illustrated in Fig. 1, electrodes 15 and 16 are applied,a current of very low voltage and very high amperage is turned on, the bottom of the pocket and the end'of the stem blank are separated a few thousandths and then pressed together; When the separation is made an arc as large as the stem blank is formed and fuses the metal at the bottom of the pocket and the end of the stem, and under the subsequent count oithe low-voltage the small clearance 14 will prevent an are between the walls of pressure a perfect weld is elfected. On acthe pocket and ,the stem blank and at the same time there will, be insufficient air in the thin annulusrepresented by the clearance to permit any appreciable oxidation of the metal.
The united blanks are then heated and 'forgedby inserting them into a cavity 17 in a die 18 and exerting pressure on them with an upper die 19. Under this treatment the stem blank is provided with the enlargements 20Yand21 connected bythe waistshaped portion 22' and the head blank is formed into an envelope or jacket 23 covering the top of the stem blank as indicated at 24 and gripping. the waist-shaped portion of the stem blank to the bottom of the pocket results in a homogeneous union between the top portion 24 of the envelope and the top end of the stem blank metal which not only contributes to the strength of the connection but facilitates the. conduction of heat from the stem to the seating portion of the valve head which-is in contact with the cooled cylinder casting. p
The blanks should not be heated separately before the welding operation because the supply of air usually, present under those conditions would permit the formation of scale on the walls of the pocket and the end of the stem blank, which would not only eliminate the necessary clearance, but would form a defective streak in the finished valve.
The homogenous union, of the two blanks may be effected by other processes of welding or b brazing or by inserting between the end of the stem and the bottom of the pocket what may be called an iron cement which, upon fusion, willunite the head and the stem. However, electricwelding is the preferred means of making this union, and when the voltage is very low the clearance 14 required is very, small. For example, with a valve stem the pocket need only be g" in diameter.
The spherical form of head blank is preferred because it lends itself to quantity production with remarkably uniform size, which is important when the forging is to be done in the manner described.
Various modifications may be made within the scope of the invention, and while the foregoing disclosure includes specific description and illustration, it is not intended that anything therein should unnecessarily limit the claims or require an interpretation of them that would permit the substance of the invention to be appropriated without infringement.
I claim as my invention:
1. The process of making composite valves which includes inserting one end of a rod into a pocket in a block, homogeneously uniting the end of the rod to the end wall of the' pocket and hot forging the block and rod to form a valve head.
2. The process of making composite valves which includes inserting one end of a rod into a pocket in a block, said pocket being of sufficient dimensions to afford clearance around said rod, welding the end of the rod to the end Wall of the pocket and hot forging the block and rod to form a valve head.
3. The process of making composite valves which includes inserting one end of a rod into a pocket in a block, welding the end surface of the rod to the end wall of the pocket and radially expanding the rod and block simultaneously to form an enlargement on the rod and a flange on the block extending under said enlargement in intimate contact therewith.
ROBERT J ARDIN E.
cngrmcm or connncnou.
I mm No. 1,826,549. Granted October 6, 1931, to
I t ROBERT JARDINE.
It is hereby certified that the above numbered patent was erroneously issued to "Rich Tool Company," ofChicago, Illinois,fa -corporation of Illinois", whereas said patent should have been issued to Rich Tool Company, of Portland, Maine, a. corporation of Maine, as assignee by mesne assignments of the entire interest in said inventiom'as shown by the records of assignments in this oifice; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.
Signed andrsealed this 16th day of. February, A. D. 1932.
M. J.',Moore, (Seal) Acting Commissioner of Patents.
US725024A 1924-07-09 1924-07-09 Process of making composite valves Expired - Lifetime US1826549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US725024A US1826549A (en) 1924-07-09 1924-07-09 Process of making composite valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US725024A US1826549A (en) 1924-07-09 1924-07-09 Process of making composite valves

Publications (1)

Publication Number Publication Date
US1826549A true US1826549A (en) 1931-10-06

Family

ID=24912819

Family Applications (1)

Application Number Title Priority Date Filing Date
US725024A Expired - Lifetime US1826549A (en) 1924-07-09 1924-07-09 Process of making composite valves

Country Status (1)

Country Link
US (1) US1826549A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742018C (en) * 1937-05-27 1944-02-24 Siemens Ag Process for the production of components for electrotechnical purposes
US2439246A (en) * 1944-03-11 1948-04-06 Thompson Prod Inc Pressure welding machine
US2450803A (en) * 1942-01-24 1948-10-05 Thompson Prod Inc Method of making sheathed valves
US2471936A (en) * 1944-01-21 1949-05-31 Thompson Prod Inc Method of making poppet valves
US2513939A (en) * 1944-04-19 1950-07-04 Eaton Mfg Co Construction of composite metal articles
DE917162C (en) * 1951-04-05 1954-08-26 Daimler Benz Ag Process for the manufacture of armored valves and valves manufactured by this process
DE973525C (en) * 1951-11-01 1960-03-17 Deutsche Edelstahlwerke Ag Method for armoring valve cones
DE1102847B (en) * 1954-12-07 1961-03-23 Alois Schiffmann Dipl Kfm Process for the production of contact and corrosion-proof two-metal high-current terminals
US3139669A (en) * 1960-02-23 1964-07-07 Gibson Electric Company Method of making an electrical contact
US3191276A (en) * 1959-12-01 1965-06-29 Talon Inc Method of making composite electrical contact bodies
US3308531A (en) * 1961-01-27 1967-03-14 Wasserkampf Kurt Method of welding alloy pins
US3326520A (en) * 1964-03-25 1967-06-20 Rubber Electronic Ind Resilient needle valve element
US4270257A (en) * 1975-04-26 1981-06-02 Ntn Toyo Bearing Co. Ltd. Method for manufacturing a fuel injection valve
DE3614185A1 (en) * 1985-08-09 1987-02-19 Schwermasch Liebknecht Veb K METHOD FOR THE PRODUCTION OF HIGH-QUALITY LIFTING VALVES FOR INTERNAL COMBUSTION ENGINES
US5313917A (en) * 1993-08-18 1994-05-24 Briggs & Stratton Corporation Self-aligning valve assembly

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742018C (en) * 1937-05-27 1944-02-24 Siemens Ag Process for the production of components for electrotechnical purposes
US2450803A (en) * 1942-01-24 1948-10-05 Thompson Prod Inc Method of making sheathed valves
US2471936A (en) * 1944-01-21 1949-05-31 Thompson Prod Inc Method of making poppet valves
US2439246A (en) * 1944-03-11 1948-04-06 Thompson Prod Inc Pressure welding machine
US2513939A (en) * 1944-04-19 1950-07-04 Eaton Mfg Co Construction of composite metal articles
DE917162C (en) * 1951-04-05 1954-08-26 Daimler Benz Ag Process for the manufacture of armored valves and valves manufactured by this process
DE973525C (en) * 1951-11-01 1960-03-17 Deutsche Edelstahlwerke Ag Method for armoring valve cones
DE1102847B (en) * 1954-12-07 1961-03-23 Alois Schiffmann Dipl Kfm Process for the production of contact and corrosion-proof two-metal high-current terminals
US3191276A (en) * 1959-12-01 1965-06-29 Talon Inc Method of making composite electrical contact bodies
US3139669A (en) * 1960-02-23 1964-07-07 Gibson Electric Company Method of making an electrical contact
US3308531A (en) * 1961-01-27 1967-03-14 Wasserkampf Kurt Method of welding alloy pins
US3326520A (en) * 1964-03-25 1967-06-20 Rubber Electronic Ind Resilient needle valve element
US4270257A (en) * 1975-04-26 1981-06-02 Ntn Toyo Bearing Co. Ltd. Method for manufacturing a fuel injection valve
DE3614185A1 (en) * 1985-08-09 1987-02-19 Schwermasch Liebknecht Veb K METHOD FOR THE PRODUCTION OF HIGH-QUALITY LIFTING VALVES FOR INTERNAL COMBUSTION ENGINES
US5313917A (en) * 1993-08-18 1994-05-24 Briggs & Stratton Corporation Self-aligning valve assembly

Similar Documents

Publication Publication Date Title
US1826549A (en) Process of making composite valves
US2202405A (en) Method of resistance welding
US2193088A (en) Poppet valve blank and method of making same
US3449816A (en) Method of repairing screw-in precombustion chamber type openings in cylinder heads
US2093771A (en) Method of making copper cooled valves
US2731708A (en) Process for manufacture of hollow poppet valves especially for internal-combustion engines
US1984728A (en) Method of making hollow head valves
US3777783A (en) Valve and method of making the same
US2093774A (en) Method of making valves
US2700087A (en) Electrical contact member
US2093773A (en) Method of making hollow valves
US2359477A (en) Method of making hollow head valves
US1759906A (en) Method of making bearings
US1826542A (en) Poppet valve and process of making same
US1498520A (en) Valve for internal-combustion engines and method of making the same
US1898814A (en) Process of making tappets
US2349840A (en) Method of making cartridge cases
US1278357A (en) Shell and projectile.
US3149818A (en) Elastic wedge-shaped gate member for slide stop valves and method of producing same
US2055342A (en) Method of making valve tappets
US2093776A (en) Method of making valves
US2256912A (en) Manufacture of wire-drawing dies
US1980716A (en) Method of making inlaid metal valves
US2265561A (en) Method of making valve tappets
US2098892A (en) Tap bush and method of forming the same