US1898814A - Process of making tappets - Google Patents

Process of making tappets Download PDF

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Publication number
US1898814A
US1898814A US204628A US20462827A US1898814A US 1898814 A US1898814 A US 1898814A US 204628 A US204628 A US 204628A US 20462827 A US20462827 A US 20462827A US 1898814 A US1898814 A US 1898814A
Authority
US
United States
Prior art keywords
blank
block
facing
tappets
making
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
US204628A
Other languages
English (en)
Inventor
Charlton George
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 US204628A priority Critical patent/US1898814A/en
Priority to GB10976/28A priority patent/GB293685A/en
Priority to FR654761D priority patent/FR654761A/fr
Priority to DEC41408D priority patent/DE503157C/de
Priority to CH133273D priority patent/CH133273A/de
Application granted granted Critical
Publication of US1898814A publication Critical patent/US1898814A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S403/00—Joints and connections
    • Y10S403/02—Metal treatment
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/90—Fastener or fastener element composed of plural different materials
    • 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
    • Y10T29/49304—Valve tappet 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
    • Y10T29/49314—Poppet or I.C. engine valve or valve seat making with assembly or composite article making

Definitions

  • This invention relates to tappets for poppet valves and the like, and has for its princlpal object to provide a light, durable structure composed chiefly of inexpensive common steel protected by a wear resisting facing.
  • materials that have great resistance to wear or mechanical abrasion are expensive in comparison with ordinary steel and are frequently comparatively brittle.
  • the invention is not confined, however, to the use of expensive wear-resisting metal, for inexpensive white iron makes an excellent tappet facing and may be used instead of the expensive materials in making tappets according to this invention.
  • Fig. 1 is a side elevation of a block of facing material
  • Fig. 2 is a side elevation, partly in section, of a blank of metal adapted to form the body of the tappet;
  • Fig. 3 is a view similar to Fig. 2, illustrating the block and the blank assembled and welded together;
  • Fig. 4 is a sectional view diagrammatically illustrating dies used in reducing the blanks to the desired form.
  • Fig.- 5 is a side elevation partly in section of a product of this procedure.
  • the block 10 of facing metal is seven-eighths inches in length and twenty-one thirty-second inches in diameter.
  • the body blank 11 is two and one-half inchesin length and seven-eighths inches in diameter.
  • a hole or pocket 12 twenty-two thirtysecond inches in diameter and five-sixteenth inches in depth, and rising from the bottom of the hole is a projection 13 seven-sixteenth inches in diameter and one-eighth inch in height.
  • a current of low voltage and high amperage is passed through the two blanks, then separated a few thousandths of an inch for a moment during which the resultant arc fuses the adjacent surfaces, and then they are quickly pressed together, and the weld is ef generally chromium ity of times before the final pressure is applied.
  • the difference in diameter between the pocket 12 and the block 10 provides clearance between their adjacent walls sufficient to prevent arcing across the space between them and the proper alignment is provided for by the organization of the welding machine.
  • the block and the adjacent portion of the body blank are heated to forging temperature and the assembly is placed in suitable forging apparatus diagrammatically illustrated by the die 15 having a cavity 16 and the cooperating die 17 by the action of which the upper portion of the assembly is spread laterally and made to fill the cavity 16, thereby forming the head 18 on the upper portion of the body blank, the remainder of which then becomes a stem 19, which by custom is threaded as indicated at 20.
  • the operation of the forging apparatus very thin and this, in turn, permits the head to be kept within allowable dimensions which is very important on account of the requirement for tappets of extremely light weight.
  • the blanks 10 and 11 may be readily produced from wrought stock by simple machine or forge operations, and in somev instances it will be desirable to use a cast plug for the blank 10.
  • the process of making tappets which includes forming a pocket in one end face of a rod blank with a central projection rising fromthe bottom of the pocket, inserting in the pocket a block of facing metal of less cross section than the pocket, welding the bottom of the block to the top of the projection and acting upon the assembly with endwise pressure to embed the block in the blank and spread the block and the adjacent portion of the blank to form a head.
  • the process of making tappets which includes Welding a block of facing metal'to one end face of a rod blank of greater circumferential dimensions than the block and forging the block and adjacent portion of the blank to spread them laterally and embed the metal of the block in the spread metal of the blank.
  • the metal of the body blank is tougher than that of the facing and this construction provides the facing with ample support against strains that would cause it to fracture or break.
  • the facing and the recess in which it is fitted are formed simultaneously, the corresponding surfaces acting somewhat as a die in finishing each other, they are exactly complementary and are, hence, in uniformly intimate contact, but without stress or strain.
  • the welded joint 14 serves to securely fasten the facing to the body of the tappet and prevent the development of any loosenessthat might result in noise or lost motion.
  • This construction permits the facing to be

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)
US204628A 1927-07-09 1927-07-09 Process of making tappets Expired - Lifetime US1898814A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US204628A US1898814A (en) 1927-07-09 1927-07-09 Process of making tappets
GB10976/28A GB293685A (en) 1927-07-09 1928-04-13 Improvements in or relating to electromagnetic reciprocating motors
FR654761D FR654761A (fr) 1927-07-09 1928-04-26 Perfectionnements aux moteurs électriques à mouvements alternatifs
DEC41408D DE503157C (de) 1927-07-09 1928-04-27 Einrichtung zur Kuehlung von elektromagnetischen Motoren mit hin und her gehendem Anker
CH133273D CH133273A (de) 1927-07-09 1928-05-02 Elektrisches Schlagwerk.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US204628A US1898814A (en) 1927-07-09 1927-07-09 Process of making tappets

Publications (1)

Publication Number Publication Date
US1898814A true US1898814A (en) 1933-02-21

Family

ID=22758720

Family Applications (1)

Application Number Title Priority Date Filing Date
US204628A Expired - Lifetime US1898814A (en) 1927-07-09 1927-07-09 Process of making tappets

Country Status (5)

Country Link
US (1) US1898814A (fr)
CH (1) CH133273A (fr)
DE (1) DE503157C (fr)
FR (1) FR654761A (fr)
GB (1) GB293685A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447085A (en) * 1944-05-11 1948-08-17 Duro Metal Products Co Welded joint
US2621862A (en) * 1950-05-03 1952-12-16 Abbott Worsted Mills Inc Thread guide mechanism
US2935596A (en) * 1957-12-30 1960-05-03 Earl A Thompson Fusing machine
US3124869A (en) * 1964-03-17 Valve lifter
US4404458A (en) * 1980-07-07 1983-09-13 Tange Industries, Ltd. Attachment of fork fitting to fork leg
US20090290954A1 (en) * 2006-07-11 2009-11-26 Dietz Michael G Threaded Fastener with Retainer and Method of Making Such Fastener

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079459A (en) * 1991-01-23 1992-01-07 The Babcock & Wilcox Company Electro-hammer rapper

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124869A (en) * 1964-03-17 Valve lifter
US2447085A (en) * 1944-05-11 1948-08-17 Duro Metal Products Co Welded joint
US2621862A (en) * 1950-05-03 1952-12-16 Abbott Worsted Mills Inc Thread guide mechanism
US2935596A (en) * 1957-12-30 1960-05-03 Earl A Thompson Fusing machine
US4404458A (en) * 1980-07-07 1983-09-13 Tange Industries, Ltd. Attachment of fork fitting to fork leg
US20090290954A1 (en) * 2006-07-11 2009-11-26 Dietz Michael G Threaded Fastener with Retainer and Method of Making Such Fastener

Also Published As

Publication number Publication date
GB293685A (en) 1929-07-15
FR654761A (fr) 1929-04-10
CH133273A (de) 1929-05-31
DE503157C (de) 1930-07-21

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